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xxxxxx       xxxxx
xxxx  m        xxx
xxx             xx
xxx     rr      xx
xx     rrr m     x
xx  h  rr m m    x
xx           rrrrx
xx           rrrrx
xx      hp  h rrrx
xx       rr    rrx
xx   h   rrr    rx
xxxrrr    rr    xx
xxxrrr          xx
xxxxrr         xxx
xxxxxx   rrrrxxxxx
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