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