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

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

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

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

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