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

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

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

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

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