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