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xxxxxxx      rrrxxxxxx
xxxxxxr      rrrrxxxxx
xxxxrrrr     rrr   xxx
xxxxrrrrr     rr   xxx
xxx m  rrr    ss    xx
xx m    rrr  ssss   rx
xx       rrrsssssrrrrx
xx       rrrsss  rrrrx
xx       rrrs     rrrx
xx    s  rrr p     rrx
xx   sss rrr         x
xx  rrsss rrr  rr    x
xx  rrss  rrr  rrr   x
xx  rrss  rrr   rrr  x
xxx      rrr     rrrxx
xxxx     rr  f  hrrxxx
xxxx             rrxxx
xxxxxx     f     xxxxx
xxxxxxxr        xxxxxx
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