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