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

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

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

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

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