c7-center
right-c4
right-c7
left-c3
left-c7
c4-center
right-c5
right-c8
left-c4
left-c8
c1-center
c5-center
right-c2
right-c5
left-c1
left-c5
c2-center
c6-center
right-c3
right-c6
left-c2
left-c6
