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tcfail036.hs:8:10:
Duplicate instance declarations:
instance Num NUM -- Defined at tcfail036.hs:8:10
instance Num NUM -- Defined at tcfail036.hs:10:10
tcfail036.hs:11:13:
Expecting one more argument to ‘Num’
Expected a type, but ‘Num’ has kind ‘* -> Constraint’
In the first argument of ‘Eq’, namely ‘Num’
In the instance declaration for ‘Eq Num’
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