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

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

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

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

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