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

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

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

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

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