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

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

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

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

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