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

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

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

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

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