(2 (1 2 6 (4 2 (4 5 (4 11 (4 23 ()))))) (4 (1 (11 9 13 11) 2 (3 (2 4 (4 2 (4 (16 (1 . 1) 5) (4 11 (4 23 ()))))) (1 2 4 (4 2 (4 (16 (1 . 2) 5) (4 11 (4 23 ()))))) (1 8)) 1) 1))