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diff --git a/testsuite/tests/indexed-types/should_fail/NotRelaxedExamples.hs b/testsuite/tests/indexed-types/should_fail/NotRelaxedExamples.hs
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+++ b/testsuite/tests/indexed-types/should_fail/NotRelaxedExamples.hs
@@ -0,0 +1,11 @@
+{-# LANGUAGE TypeFamilies #-}
+
+module NotRelaxedExamples where
+
+type family F1 a
+type family F2 a
+type family F3 a
+
+type instance F1 Char = F1 (F1 Char)
+type instance F2 [x]  = F2 [x]
+type instance F3 Bool = F3 [Char]