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