(0 21 18)(1 20 17 15 4)(2 19 9 6 3)(5 10 7)(8 13 11)(12 16 14)
ALLOWS (11/8)-SEQUENCE
1: (0 4 17)
(0 15 4 21 18)(1 20 17)(2 19 9 6 3)(5 10 7)(8 13 11)(12 16 14)
2: (2 19 9)
(0 15 4 21 18)(1 20 17)(2 6 3)(5 10 7)(8 13 11)(9)(12 16 14)(19)
3: (1 20 17)
(0 15 4 21 18)(1)(2 6 3)(5 10 7)(8 13 11)(9)(12 16 14)(17)(19)(20)
4: (0 21 18)
(0)(1)(2 6 3)(4 21 15)(5 10 7)(8 13 11)(9)(12 16 14)(17)(18)(19)(20)