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

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

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

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

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