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