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xxxxxxxxxxxxxxxxxxxx
x.....xxx==xxx.....x
x.oo..xxx==xxx..o+.x
x..x.xx======x..o..x
x.....x======x..o..x
xxxx..xxx==xxxxxxo.x
x...ooo.x==x....x..x
x.ox...o..o..oo.xo.x
x..x..xx.o..xx..x..x
x.o....o.xx.o....o.x
x..x..xx....xx..x..x
xxxxxxxxxxxxxxxxxxxx
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