Haskell Help

Haskell beginner here. Anybody know how i shrink this down a bit, sorry I'd figure out myself but i'm sick of learning the same concepts in 20 different languages.

{-

type Month = String

validMonth :: Month -> Bool
validMonth "January" = True
validMonth "February" = True
validMonth "March" = True
validMonth "April" = True
validMonth "May" = True
validMonth "June" = True
validMonth "July" = True
validMonth "August" = True
validMonth "September" = True
validMonth "October" = True
validMonth "November" = True
validMonth "December" = True
validMonth _ = False

-}

>>14

/prog/ where a proper computer programming language implementation of a basic concept is called "enterprise" and dismissed.

You idiots can't understand real programming. Its why I get paid the big bucks, to fix your idiot fuck ups and wright correct code.

All of you are fucking Indians with 3rd world "programming" degrees.