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

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

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

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

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