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

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

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

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

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