Let VS1 follow U+1031 MYANMAR VOWEL SIGN E
diff --git a/src/hb-ot-shape-complex-myanmar-machine.rl b/src/hb-ot-shape-complex-myanmar-machine.rl
index 45733ac..0cd84fa 100644
--- a/src/hb-ot-shape-complex-myanmar-machine.rl
+++ b/src/hb-ot-shape-complex-myanmar-machine.rl
@@ -70,7 +70,7 @@
c = C|Ra; # is_consonant
medial_group = MY? MR? MW? MH? As?;
-main_vowel_group = VPre* VAbv* VBlw* A* (DB As?)?;
+main_vowel_group = (VPre.VS?)* VAbv* VBlw* A* (DB As?)?;
post_vowel_group = VPst MH? As* VAbv* A* (DB As?)?;
pwo_tone_group = PT A* DB? As?;