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