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xxxxxxrrrr   xxxxx
xxxx    rr     xxx
xxxr            xx
xxxrr     ss    xx
xxrrr          rrx
xxrrr  s       rrx
xxrr    p        x
xx         rr    x
xx         rrr   x
xx  m       rr   x
xx   h    s      x
xxx       s f   xx
xxx             xx
xxxxrrr        xxx
xxxxxxrr     xxxxx
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