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xxxxxxx  rrrr   xxxxxx
xxxxxx   rrrr    xxxxx
xxxx     rrr     rrxxx
xxxx             rrxxx
xxx                 xx
xx  s          h     x
xx ss        rrr     x
xx s       p rrr    hx
xx           rrr     x
xx           rrr     x
xx           rrr s  hx
xxr         rrrrr    x
xxr      s rrrrrr    x
xxr    h   rrrrrr    x
xxxr                xx
xxxxr              xxx
xxxxr              xxx
xxxxxx           xxxxx
xxxxxxx         xxxxxx
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