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

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

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

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

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