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

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

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

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

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