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

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

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

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

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