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

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

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

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

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