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

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

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

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

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