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