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