"[[[*(aqqq),bqqq],cqq],[dqqq,eqqq]]"
success (0, (1, 18)) (1, (2, 14)) (2, (3, 9)) (3, (a, 4, 4)) (4, (q, 5, 5)) (5, (q, 6, 6)) (6, (q, 7, 7)) (7, (3, 8)) (8, (13, 13)) (9, (b, 10, 10)) (10, (q, 11, 11)) (11, (q, 12, 12)) (12, (q, 13, 13)) (13, (17, 17)) (14, (c, 15, 15)) (15, (q, 16, 16)) (16, (q, 17, 17)) (17, (28, 28)) (18, (19, 23)) (19, (d, 20, 20)) (20, (q, 21, 21)) (21, (q, 22, 22)) (22, (q, 27, 27)) (23, (e, 24, 24)) (24, (q, 25, 25)) (25, (q, 26, 26)) (26, (q, 27, 27)) (27, (28, 28)) (28, (0, 0)) (29, (0, 0)) david@works:~\$