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