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