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