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mc21.hs:12:26: error:
• Occurs check: cannot construct the infinite type: a ~ [a]
Expected type: [a] -> [[a]]
Actual type: [[a]] -> [[a]]
• In the expression: take 5
In a stmt of a monad comprehension: then group using take 5
In the expression:
[GHC.List.length x | x <- [Gnorf, Brain], then group using take 5]
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