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xxxxxxrr    rxxxxx
xxxxm       rrrxxx
xxx    m        xx
xxx             xx
xxr     m   sss  x
xxrr   m   m rr  x
xxrrs   p    rrrrx
xxrm          rrrx
xx    m          x
xx               x
xx             s x
xxx    rr     ssxx
xxx    rr  m   sxx
xxxx   rr     rxxx
xxxxxxrrr    xxxxx
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