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xxxxxxr      xxxxx
xxxxrrr   m    xxx
xxx  rrr   h    xx
xxx  srr   h    xx
xx   s           x
xx  ss m       m x
xx  ss  prrr     x
xx  rr  srrrr    x
xx  rrrsss rrr   x
xx  rrr     rrr  x
xx  mrrrf    rrrrx
xxx   rr  h  rrrxx
xxx          rrrxx
xxxx   sss   rrxxx
xxxxxx  ssss xxxxx
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