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

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

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

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

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