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

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

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

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

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