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