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