-- | Check if argument is one of @\'a\', \'e\', \'i\', \'o\', \'u\', \'y\',
-- \'A\', \'E\', \'I\', \'O\', \'U\', \'Y\'@.
isVowelY :: (FromAscii a, Eq a) => a -> Bool
isVowelY = isLowerVowelY <||> isUpperVowelY
isVowelY :: (FromAscii a, Eq a) => a -> Bool
isVowelY = isLowerVowelY <||> isUpperVowelY
isVowelY = isLowerVowelY <||> isUpperVowelY