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

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

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

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

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