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

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

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

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

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