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

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

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

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

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