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

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

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

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

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