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xxxxxxxxxxxxxxxxxxxx
x+.....x...x.......x
xx.xxx.xx..xxxx.x.xx
x....x.x..oo.......x
x..x.x.x.o.x.o.xx.xx
x.....o.x..xoo.x...x
x..xxx..x......xx.xx
x==x=x.o.x..o.x....x
x==x=x..o.x.xx.oo..x
x====xx...oo..o..x.x
x=====xx........x..x
xxxxxxxxxxxxxxxxxxxx
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