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

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

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

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

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