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

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

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

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

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