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