T2490.hs:6:10:
    A section must be enclosed in parentheses thus: (`head` x)

T2490.hs:7:10:
    A section must be enclosed in parentheses thus: (+ x)

T2490.hs:8:14:
    A section must be enclosed in parentheses thus: (+ x)

T2490.hs:9:14:
    A section must be enclosed in parentheses thus: (+ x)

T2490.hs:10:14:
    A section must be enclosed in parentheses thus: (x +)