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

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

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

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

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