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