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