B2ackn3iry4ny5r to B2ackn3iry4ny5r6i

o.oo....o.
..........
.....oo..o

B2ackn3iry4ny5r to B2ackn3iry4ny5r6i

o.oo.....o.
...........
.....ooo..o

B2ackn3iny4y5er to B2ackn3iny4cy5er

.ooooooo..o.
............
o........ooo