1-r0 2-r0 3-r0
4-r0 6-r0 8-r0
9-r0 5-r0 7-r0
7-r0 5-r90 9-r90
2-r0 1-r270 8-r270
6-r0 4-r90 3-r90
7-r0 2-r180 6-r0
5-r0 1-r180 4-r0
9-r0 8-r90 3-r90