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