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

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

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

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

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