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

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

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

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

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