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

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

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

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

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