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