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