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