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