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

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

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

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

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