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xxxxxx     ssxxxxx
xxxxr   sssss  xxx
xxxr   m   s    xx
xxxr   rr sss m xx
xxrr   rr ss     x
xxrr   rr s      x
xxrr     sss     x
xx     pss s     x
xx      m  m     x
xx    rr         x
xx   rrr     rrrrx
xxx  rr     rrrrxx
xxx        rrrrrxx
xxxx      rrrrrxxx
xxxxxx   rrrrxxxxx
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