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