T4426.hs:11:18: error: Not in scope: type variable ‘m’

T4426.hs:11:28: error: Not in scope: type variable ‘m’

T4426.hs:13:18: error: Not in scope: type variable ‘b’

T4426.hs:13:28: error: Not in scope: type variable ‘b’

T4426.hs:15:24: error: Not in scope: type variable ‘b’

T4426.hs:15:34: error: Not in scope: type variable ‘b’

T4426.hs:15:39: error: Not in scope: type variable ‘c’

T4426.hs:17:23: error: Not in scope: type variable ‘m’

T4426.hs:17:28: error: Not in scope: type variable ‘m’