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