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

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

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

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

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