From db37b3bd9aa4cbad2f2396ef38607321611f7db9 Mon Sep 17 00:00:00 2001
From: Simon Cozens <simon@simon-cozens.org>
Date: Mon, 16 Nov 2020 13:42:22 +0000
Subject: [PATCH] Update test expectations

---
 Tests/feaLib/data/ChainPosSubtable.ttx        |  36 +--
 Tests/feaLib/data/GPOS_8.ttx                  |  68 +++---
 Tests/feaLib/data/GSUB_6.ttx                  |  52 ++---
 .../ZeroValue_ChainSinglePos_horizontal.ttx   |  69 +++---
 .../ZeroValue_ChainSinglePos_vertical.ttx     |  69 +++---
 Tests/feaLib/data/bug512.ttx                  |  83 +++----
 Tests/feaLib/data/spec5f_ii_3.ttx             | 212 +++++++++---------
 7 files changed, 289 insertions(+), 300 deletions(-)

diff --git a/Tests/feaLib/data/ChainPosSubtable.ttx b/Tests/feaLib/data/ChainPosSubtable.ttx
index a780ccb72..695dd8621 100644
--- a/Tests/feaLib/data/ChainPosSubtable.ttx
+++ b/Tests/feaLib/data/ChainPosSubtable.ttx
@@ -67,24 +67,26 @@
             <LookupListIndex value="1"/>
           </PosLookupRecord>
         </ChainContextPos>
-        <ChainContextPos index="1" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="X"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
+        <ChainContextPos index="1" Format="1">
+          <Coverage>
             <Glyph value="A"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="Y"/>
-          </LookAheadCoverage>
-          <!-- PosCount=1 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="2"/>
-          </PosLookupRecord>
+          </Coverage>
+          <!-- ChainPosRuleSetCount=1 -->
+          <ChainPosRuleSet index="0">
+            <!-- ChainPosRuleCount=1 -->
+            <ChainPosRule index="0">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="X"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="Y"/>
+              <!-- PosCount=1 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="2"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+          </ChainPosRuleSet>
         </ChainContextPos>
         <ChainContextPos index="2" Format="3">
           <!-- BacktrackGlyphCount=1 -->
diff --git a/Tests/feaLib/data/GPOS_8.ttx b/Tests/feaLib/data/GPOS_8.ttx
index 86f97560e..4d7907157 100644
--- a/Tests/feaLib/data/GPOS_8.ttx
+++ b/Tests/feaLib/data/GPOS_8.ttx
@@ -34,42 +34,40 @@
         <LookupType value="8"/>
         <LookupFlag value="0"/>
         <!-- SubTableCount=1 -->
-        <ChainContextPos index="0" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="A"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=4 -->
-          <InputCoverage index="0">
+        <ChainContextPos index="0" Format="1">
+          <Coverage>
             <Glyph value="one"/>
-          </InputCoverage>
-          <InputCoverage index="1">
-            <Glyph value="two"/>
-          </InputCoverage>
-          <InputCoverage index="2">
-            <Glyph value="one"/>
-          </InputCoverage>
-          <InputCoverage index="3">
-            <Glyph value="two"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=0 -->
-          <!-- PosCount=4 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
-          <PosLookupRecord index="1">
-            <SequenceIndex value="1"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
-          <PosLookupRecord index="2">
-            <SequenceIndex value="2"/>
-            <LookupListIndex value="2"/>
-          </PosLookupRecord>
-          <PosLookupRecord index="3">
-            <SequenceIndex value="3"/>
-            <LookupListIndex value="2"/>
-          </PosLookupRecord>
+          </Coverage>
+          <!-- ChainPosRuleSetCount=1 -->
+          <ChainPosRuleSet index="0">
+            <!-- ChainPosRuleCount=1 -->
+            <ChainPosRule index="0">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="A"/>
+              <!-- InputGlyphCount=4 -->
+              <Input index="0" value="two"/>
+              <Input index="1" value="one"/>
+              <Input index="2" value="two"/>
+              <!-- LookAheadGlyphCount=0 -->
+              <!-- PosCount=4 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+              <PosLookupRecord index="1">
+                <SequenceIndex value="1"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+              <PosLookupRecord index="2">
+                <SequenceIndex value="2"/>
+                <LookupListIndex value="2"/>
+              </PosLookupRecord>
+              <PosLookupRecord index="3">
+                <SequenceIndex value="3"/>
+                <LookupListIndex value="2"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+          </ChainPosRuleSet>
         </ChainContextPos>
       </Lookup>
       <Lookup index="1">
diff --git a/Tests/feaLib/data/GSUB_6.ttx b/Tests/feaLib/data/GSUB_6.ttx
index f32e47d9e..18405d251 100644
--- a/Tests/feaLib/data/GSUB_6.ttx
+++ b/Tests/feaLib/data/GSUB_6.ttx
@@ -229,36 +229,30 @@
         <LookupType value="6"/>
         <LookupFlag value="0"/>
         <!-- SubTableCount=1 -->
-        <ChainContextSubst index="0" Format="3">
-          <!-- BacktrackGlyphCount=3 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="E"/>
-          </BacktrackCoverage>
-          <BacktrackCoverage index="1">
-            <Glyph value="D"/>
-          </BacktrackCoverage>
-          <BacktrackCoverage index="2">
-            <Glyph value="A"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
+        <ChainContextSubst index="0" Format="1">
+          <Coverage>
             <Glyph value="c_t"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=3 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="V"/>
-          </LookAheadCoverage>
-          <LookAheadCoverage index="1">
-            <Glyph value="W"/>
-          </LookAheadCoverage>
-          <LookAheadCoverage index="2">
-            <Glyph value="X"/>
-          </LookAheadCoverage>
-          <!-- SubstCount=1 -->
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="2"/>
-          </SubstLookupRecord>
+          </Coverage>
+          <!-- ChainSubRuleSetCount=1 -->
+          <ChainSubRuleSet index="0">
+            <!-- ChainSubRuleCount=1 -->
+            <ChainSubRule index="0">
+              <!-- BacktrackGlyphCount=3 -->
+              <Backtrack index="0" value="E"/>
+              <Backtrack index="1" value="D"/>
+              <Backtrack index="2" value="A"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=3 -->
+              <LookAhead index="0" value="V"/>
+              <LookAhead index="1" value="W"/>
+              <LookAhead index="2" value="X"/>
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="2"/>
+              </SubstLookupRecord>
+            </ChainSubRule>
+          </ChainSubRuleSet>
         </ChainContextSubst>
       </Lookup>
     </LookupList>
diff --git a/Tests/feaLib/data/ZeroValue_ChainSinglePos_horizontal.ttx b/Tests/feaLib/data/ZeroValue_ChainSinglePos_horizontal.ttx
index ce76370e1..98f7aa9e9 100644
--- a/Tests/feaLib/data/ZeroValue_ChainSinglePos_horizontal.ttx
+++ b/Tests/feaLib/data/ZeroValue_ChainSinglePos_horizontal.ttx
@@ -32,44 +32,39 @@
       <Lookup index="0">
         <LookupType value="8"/>
         <LookupFlag value="0"/>
-        <!-- SubTableCount=2 -->
-        <ChainContextPos index="0" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="A"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
+        <!-- SubTableCount=1 -->
+        <ChainContextPos index="0" Format="1">
+          <Coverage>
             <Glyph value="G"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="A"/>
-          </LookAheadCoverage>
-          <!-- PosCount=1 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
-        </ChainContextPos>
-        <ChainContextPos index="1" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="B"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
-            <Glyph value="G"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="B"/>
-          </LookAheadCoverage>
-          <!-- PosCount=1 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
+          </Coverage>
+          <!-- ChainPosRuleSetCount=1 -->
+          <ChainPosRuleSet index="0">
+            <!-- ChainPosRuleCount=2 -->
+            <ChainPosRule index="0">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="A"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="A"/>
+              <!-- PosCount=1 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+            <ChainPosRule index="1">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="B"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="B"/>
+              <!-- PosCount=1 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+          </ChainPosRuleSet>
         </ChainContextPos>
       </Lookup>
       <Lookup index="1">
diff --git a/Tests/feaLib/data/ZeroValue_ChainSinglePos_vertical.ttx b/Tests/feaLib/data/ZeroValue_ChainSinglePos_vertical.ttx
index e1cb5d613..973cb4f6c 100644
--- a/Tests/feaLib/data/ZeroValue_ChainSinglePos_vertical.ttx
+++ b/Tests/feaLib/data/ZeroValue_ChainSinglePos_vertical.ttx
@@ -32,44 +32,39 @@
       <Lookup index="0">
         <LookupType value="8"/>
         <LookupFlag value="0"/>
-        <!-- SubTableCount=2 -->
-        <ChainContextPos index="0" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="A"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
+        <!-- SubTableCount=1 -->
+        <ChainContextPos index="0" Format="1">
+          <Coverage>
             <Glyph value="G"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="A"/>
-          </LookAheadCoverage>
-          <!-- PosCount=1 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
-        </ChainContextPos>
-        <ChainContextPos index="1" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
-            <Glyph value="B"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=1 -->
-          <InputCoverage index="0">
-            <Glyph value="G"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="B"/>
-          </LookAheadCoverage>
-          <!-- PosCount=1 -->
-          <PosLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </PosLookupRecord>
+          </Coverage>
+          <!-- ChainPosRuleSetCount=1 -->
+          <ChainPosRuleSet index="0">
+            <!-- ChainPosRuleCount=2 -->
+            <ChainPosRule index="0">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="A"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="A"/>
+              <!-- PosCount=1 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+            <ChainPosRule index="1">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="B"/>
+              <!-- InputGlyphCount=1 -->
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="B"/>
+              <!-- PosCount=1 -->
+              <PosLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </PosLookupRecord>
+            </ChainPosRule>
+          </ChainPosRuleSet>
         </ChainContextPos>
       </Lookup>
       <Lookup index="1">
diff --git a/Tests/feaLib/data/bug512.ttx b/Tests/feaLib/data/bug512.ttx
index 50b76b465..693ebeb7c 100644
--- a/Tests/feaLib/data/bug512.ttx
+++ b/Tests/feaLib/data/bug512.ttx
@@ -32,50 +32,51 @@
       <Lookup index="0">
         <LookupType value="5"/>
         <LookupFlag value="0"/>
-        <!-- SubTableCount=4 -->
-        <ContextSubst index="0" Format="3">
-          <!-- GlyphCount=1 -->
-          <!-- SubstCount=1 -->
-          <Coverage index="0">
+        <!-- SubTableCount=1 -->
+        <ContextSubst index="0" Format="1">
+          <Coverage>
             <Glyph value="G"/>
-          </Coverage>
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </SubstLookupRecord>
-        </ContextSubst>
-        <ContextSubst index="1" Format="3">
-          <!-- GlyphCount=1 -->
-          <!-- SubstCount=1 -->
-          <Coverage index="0">
             <Glyph value="H"/>
           </Coverage>
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </SubstLookupRecord>
-        </ContextSubst>
-        <ContextSubst index="2" Format="3">
-          <!-- GlyphCount=1 -->
-          <!-- SubstCount=1 -->
-          <Coverage index="0">
-            <Glyph value="G"/>
-          </Coverage>
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="2"/>
-          </SubstLookupRecord>
-        </ContextSubst>
-        <ContextSubst index="3" Format="3">
-          <!-- GlyphCount=1 -->
-          <!-- SubstCount=1 -->
-          <Coverage index="0">
-            <Glyph value="H"/>
-          </Coverage>
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="2"/>
-          </SubstLookupRecord>
+          <!-- SubRuleSetCount=2 -->
+          <SubRuleSet index="0">
+            <!-- SubRuleCount=2 -->
+            <SubRule index="0">
+              <!-- GlyphCount=1 -->
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </SubstLookupRecord>
+            </SubRule>
+            <SubRule index="1">
+              <!-- GlyphCount=1 -->
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="2"/>
+              </SubstLookupRecord>
+            </SubRule>
+          </SubRuleSet>
+          <SubRuleSet index="1">
+            <!-- SubRuleCount=2 -->
+            <SubRule index="0">
+              <!-- GlyphCount=1 -->
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </SubstLookupRecord>
+            </SubRule>
+            <SubRule index="1">
+              <!-- GlyphCount=1 -->
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="2"/>
+              </SubstLookupRecord>
+            </SubRule>
+          </SubRuleSet>
         </ContextSubst>
       </Lookup>
       <Lookup index="1">
diff --git a/Tests/feaLib/data/spec5f_ii_3.ttx b/Tests/feaLib/data/spec5f_ii_3.ttx
index a550f0b66..a94efceab 100644
--- a/Tests/feaLib/data/spec5f_ii_3.ttx
+++ b/Tests/feaLib/data/spec5f_ii_3.ttx
@@ -32,111 +32,115 @@
       <Lookup index="0">
         <LookupType value="6"/>
         <LookupFlag value="0"/>
-        <!-- SubTableCount=3 -->
-        <ChainContextSubst index="0" Format="3">
-          <!-- BacktrackGlyphCount=1 -->
-          <BacktrackCoverage index="0">
+        <!-- SubTableCount=1 -->
+        <ChainContextSubst index="0" Format="2">
+          <Coverage>
             <Glyph value="a"/>
-            <Glyph value="b"/>
-            <Glyph value="c"/>
-            <Glyph value="d"/>
-            <Glyph value="e"/>
-            <Glyph value="f"/>
-            <Glyph value="g"/>
-            <Glyph value="h"/>
-            <Glyph value="i"/>
-            <Glyph value="j"/>
-            <Glyph value="k"/>
-            <Glyph value="l"/>
-            <Glyph value="m"/>
-            <Glyph value="n"/>
-            <Glyph value="o"/>
-            <Glyph value="p"/>
-            <Glyph value="q"/>
-            <Glyph value="r"/>
-            <Glyph value="s"/>
-            <Glyph value="t"/>
-            <Glyph value="u"/>
-            <Glyph value="v"/>
-            <Glyph value="w"/>
-            <Glyph value="x"/>
-            <Glyph value="y"/>
-            <Glyph value="z"/>
-          </BacktrackCoverage>
-          <!-- InputGlyphCount=3 -->
-          <InputCoverage index="0">
-            <Glyph value="a"/>
-          </InputCoverage>
-          <InputCoverage index="1">
-            <Glyph value="n"/>
-          </InputCoverage>
-          <InputCoverage index="2">
-            <Glyph value="d"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=0 -->
-          <!-- SubstCount=0 -->
-        </ChainContextSubst>
-        <ChainContextSubst index="1" Format="3">
-          <!-- BacktrackGlyphCount=0 -->
-          <!-- InputGlyphCount=3 -->
-          <InputCoverage index="0">
-            <Glyph value="a"/>
-          </InputCoverage>
-          <InputCoverage index="1">
-            <Glyph value="n"/>
-          </InputCoverage>
-          <InputCoverage index="2">
-            <Glyph value="d"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=1 -->
-          <LookAheadCoverage index="0">
-            <Glyph value="a"/>
-            <Glyph value="b"/>
-            <Glyph value="c"/>
-            <Glyph value="d"/>
-            <Glyph value="e"/>
-            <Glyph value="f"/>
-            <Glyph value="g"/>
-            <Glyph value="h"/>
-            <Glyph value="i"/>
-            <Glyph value="j"/>
-            <Glyph value="k"/>
-            <Glyph value="l"/>
-            <Glyph value="m"/>
-            <Glyph value="n"/>
-            <Glyph value="o"/>
-            <Glyph value="p"/>
-            <Glyph value="q"/>
-            <Glyph value="r"/>
-            <Glyph value="s"/>
-            <Glyph value="t"/>
-            <Glyph value="u"/>
-            <Glyph value="v"/>
-            <Glyph value="w"/>
-            <Glyph value="x"/>
-            <Glyph value="y"/>
-            <Glyph value="z"/>
-          </LookAheadCoverage>
-          <!-- SubstCount=0 -->
-        </ChainContextSubst>
-        <ChainContextSubst index="2" Format="3">
-          <!-- BacktrackGlyphCount=0 -->
-          <!-- InputGlyphCount=3 -->
-          <InputCoverage index="0">
-            <Glyph value="a"/>
-          </InputCoverage>
-          <InputCoverage index="1">
-            <Glyph value="n"/>
-          </InputCoverage>
-          <InputCoverage index="2">
-            <Glyph value="d"/>
-          </InputCoverage>
-          <!-- LookAheadGlyphCount=0 -->
-          <!-- SubstCount=1 -->
-          <SubstLookupRecord index="0">
-            <SequenceIndex value="0"/>
-            <LookupListIndex value="1"/>
-          </SubstLookupRecord>
+          </Coverage>
+          <BacktrackClassDef>
+            <ClassDef glyph="a" class="1"/>
+            <ClassDef glyph="b" class="1"/>
+            <ClassDef glyph="c" class="1"/>
+            <ClassDef glyph="d" class="1"/>
+            <ClassDef glyph="e" class="1"/>
+            <ClassDef glyph="f" class="1"/>
+            <ClassDef glyph="g" class="1"/>
+            <ClassDef glyph="h" class="1"/>
+            <ClassDef glyph="i" class="1"/>
+            <ClassDef glyph="j" class="1"/>
+            <ClassDef glyph="k" class="1"/>
+            <ClassDef glyph="l" class="1"/>
+            <ClassDef glyph="m" class="1"/>
+            <ClassDef glyph="n" class="1"/>
+            <ClassDef glyph="o" class="1"/>
+            <ClassDef glyph="p" class="1"/>
+            <ClassDef glyph="q" class="1"/>
+            <ClassDef glyph="r" class="1"/>
+            <ClassDef glyph="s" class="1"/>
+            <ClassDef glyph="t" class="1"/>
+            <ClassDef glyph="u" class="1"/>
+            <ClassDef glyph="v" class="1"/>
+            <ClassDef glyph="w" class="1"/>
+            <ClassDef glyph="x" class="1"/>
+            <ClassDef glyph="y" class="1"/>
+            <ClassDef glyph="z" class="1"/>
+          </BacktrackClassDef>
+          <InputClassDef>
+            <ClassDef glyph="a" class="3"/>
+            <ClassDef glyph="d" class="2"/>
+            <ClassDef glyph="n" class="1"/>
+          </InputClassDef>
+          <LookAheadClassDef>
+            <ClassDef glyph="a" class="1"/>
+            <ClassDef glyph="b" class="1"/>
+            <ClassDef glyph="c" class="1"/>
+            <ClassDef glyph="d" class="1"/>
+            <ClassDef glyph="e" class="1"/>
+            <ClassDef glyph="f" class="1"/>
+            <ClassDef glyph="g" class="1"/>
+            <ClassDef glyph="h" class="1"/>
+            <ClassDef glyph="i" class="1"/>
+            <ClassDef glyph="j" class="1"/>
+            <ClassDef glyph="k" class="1"/>
+            <ClassDef glyph="l" class="1"/>
+            <ClassDef glyph="m" class="1"/>
+            <ClassDef glyph="n" class="1"/>
+            <ClassDef glyph="o" class="1"/>
+            <ClassDef glyph="p" class="1"/>
+            <ClassDef glyph="q" class="1"/>
+            <ClassDef glyph="r" class="1"/>
+            <ClassDef glyph="s" class="1"/>
+            <ClassDef glyph="t" class="1"/>
+            <ClassDef glyph="u" class="1"/>
+            <ClassDef glyph="v" class="1"/>
+            <ClassDef glyph="w" class="1"/>
+            <ClassDef glyph="x" class="1"/>
+            <ClassDef glyph="y" class="1"/>
+            <ClassDef glyph="z" class="1"/>
+          </LookAheadClassDef>
+          <!-- ChainSubClassSetCount=4 -->
+          <ChainSubClassSet index="0">
+            <!-- ChainSubClassRuleCount=0 -->
+          </ChainSubClassSet>
+          <ChainSubClassSet index="1">
+            <!-- ChainSubClassRuleCount=0 -->
+          </ChainSubClassSet>
+          <ChainSubClassSet index="2">
+            <!-- ChainSubClassRuleCount=0 -->
+          </ChainSubClassSet>
+          <ChainSubClassSet index="3">
+            <!-- ChainSubClassRuleCount=3 -->
+            <ChainSubClassRule index="0">
+              <!-- BacktrackGlyphCount=1 -->
+              <Backtrack index="0" value="1"/>
+              <!-- InputGlyphCount=3 -->
+              <Input index="0" value="1"/>
+              <Input index="1" value="2"/>
+              <!-- LookAheadGlyphCount=0 -->
+              <!-- SubstCount=0 -->
+            </ChainSubClassRule>
+            <ChainSubClassRule index="1">
+              <!-- BacktrackGlyphCount=0 -->
+              <!-- InputGlyphCount=3 -->
+              <Input index="0" value="1"/>
+              <Input index="1" value="2"/>
+              <!-- LookAheadGlyphCount=1 -->
+              <LookAhead index="0" value="1"/>
+              <!-- SubstCount=0 -->
+            </ChainSubClassRule>
+            <ChainSubClassRule index="2">
+              <!-- BacktrackGlyphCount=0 -->
+              <!-- InputGlyphCount=3 -->
+              <Input index="0" value="1"/>
+              <Input index="1" value="2"/>
+              <!-- LookAheadGlyphCount=0 -->
+              <!-- SubstCount=1 -->
+              <SubstLookupRecord index="0">
+                <SequenceIndex value="0"/>
+                <LookupListIndex value="1"/>
+              </SubstLookupRecord>
+            </ChainSubClassRule>
+          </ChainSubClassSet>
         </ChainContextSubst>
       </Lookup>
       <Lookup index="1">