13.exp

a = b
  where blah = blah
        -- hello
        -- bye
        hello = hello

a = b
  where blah = blah
        -- bye
        hello = hello

foo = x -- test
  where x = blah

foo = x
  where 
        -- another test
        x = blah

f = 
  case undefined of
    Just p
    -- If it's the potato.
      | zot -> undefined
      |
      -- The geriatric concumbine.
        otherwise -> hael