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xxxxxx       xxxxx
xxxx           xxx
xxx             xx
xxx         rr  xx
xx    m    mrrrrrx
xx    h     rrrrrx
xx  h m      rrrrx
xxrrr     p      x
xxrrr            x
xxrrr     rr     x
xxr      rrr     x
xxx      rr     xx
xxx f           xx
xxxx         rrxxx
xxxxxx       xxxxx
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