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

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

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

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

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