f g g . f g f 補足 1 a -> b c -> d a -> c d 2 a -> b -> c d -> e -> f a -> e -> f e -> f 3 a -> (b -> c) d -> e -> f 2と同じ 4 (a -> b) -> c d -> e -> f (a -> b) -> e -> f e -> f 5 a -> b -> c d -> (e -> f) a -> e -> f e -> f 6 a -> b -> c…