SimpleFail11c.hs:7:15: Conflicting family instance declarations:
C9 [a] Int -- Defined at SimpleFail11c.hs:7:15 C9 [Int] Int -- Defined at SimpleFail11c.hs:9:15
SimpleFail11c.hs:13:15:
Conflicting family instance declarations:
D9 [a] Int -- Defined at SimpleFail11c.hs:13:15 D9 [Int] Int -- Defined at SimpleFail11c.hs:15:15