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mc25.hs:9:46: error:
• Couldn't match type ‘a -> t’ with ‘Int’
Expected type: (a -> t) -> [a] -> [t1 a]
Actual type: Int -> [t1 a] -> [t1 a]
• In the expression: take
In a stmt of a monad comprehension: then group by x using take
In the expression: [x | x <- [1 .. 10], then group by x using take]
• Relevant bindings include z :: [t1 t] (bound at mc25.hs:9:1)
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