xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxxrrrr   xxxxx
xxxxrrrrr      xxx
xxx  rrr        xx
xxx m           xx
xx  h      h     x
xx       m       x
xx       p      mx
xx          rr  rx
xx         rrr  rx
xx       rrrr   rx
xxm      rrr    rx
xxx             xx
xxx             xx
xxxx           xxx
xxxxxx       xxxxx
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