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