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b,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,b
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b,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.
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b,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.,.
b,.,a,.,.,.,.,.,.,.,.,.,.,.,.,.,.,a,.,.
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b,.,a,.,.,.,a,.,.,.,.,.,.,a,.,.,.,a,.,b
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b,.,.,.,.,.,.,.,.,v,v,.,.,.,.,.,.,.,.,b
b,b,b,b,b,b,b,b,b,.,.,b,b,b,b,b,b,b,b,b
