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

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

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

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

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