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

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

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

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

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