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