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

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

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

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

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