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

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

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

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

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