λx→x λx→xλx→x x→xλx→xλ 4 '\955' λx→xλx→xλx→xλx→xλx→x '\955' 20 '\955' λ Tail: x→xλx→xλx→xλx→xλx→x Tail Tail: →xλx→xλx→xλx→xλx→x Cons: λλx→xλx→xλx→xλx→xλx→x Reverse: x→xλx→xλx→xλx→xλx→xλ