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

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

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

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

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