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

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

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

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

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