integerLength 4 l
  | l <=  14  = 1
  | l <= 142  = 2
  | otherwise = 3
integerLength 4 l
  | l <=  14  = 1
  | l <= 142  = 2
  | otherwise = 3
integerLength 4 l
  | l <=  14  = 1
  | l <= 142  = 2
  | otherwise = 3