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