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