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

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

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

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

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