B2ackn4cntyz5r to B2ackn3i4cntyz5r6i

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

B2ack3qr4cn5r to B2ack3iqr4cn5r6i

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

B2ackn3ciry4ny5er to B2ackn3ciry4cny5er

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

B2ackn3iry4ny5er to B2ackn3iry4cny5er

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