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xxxxxx    h  xxxxx
xxxx       s rrxxx
xxxr     h   rrrxx
xxx     rr      xx
xxr   h rr       x
xxr     rr       x
xxrr            sx
xxrrr  p   h     x
xxrrr         s  x
xxrrr         s  x
xxrr  h          x
xxx   h         xx
xxx             xx
xxxxh          xxx
xxxxxx    h  xxxxx
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