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

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

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

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

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