> (append-reverse (3 2 1) (4 5))
| > (append-reverse (2 1) (3 4 5))
| | > (append-reverse (1) (2 3 4 5))
| | | > (append-reverse () (1 2 3 4 5))
| | | (1 2 3 4 5)
| | (1 2 3 4 5)
| (1 2 3 4 5)
(1 2 3 4 5)