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xxxxxx       rrxxxxx
xxxxxr       rrrxxxx
xxxxrrrr     rrrrxxx
xxx  rrrr         xx
xx     rrr         x
xx     srr     1   x
xxrr sss         rrx
xxrr   s         rrx
xx       ssp      rx
xx                 x
xx       rrr       x
xx       rrr   rr  x
xx             rrrrx
xxx2        h   rrxx
xxxxrrrr  s     rxxx
xxxxxrrrr       xxxx
xxxxxxrrrr     xxxxx
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