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