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