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