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

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

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

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

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