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

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

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

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

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