xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxx   rrrrxxxxx
xxxxrr   rrrsssxxx
xxx      rrrssssxx
xxx         s h xx
xx               x
xx       p  h    x
xx  hh   rrr     x
xxh rr   rrrr    x
xxrrrr    rrr    x
xxrrr  h h rr    x
xxrr             x
xxx  sss ss     xx
xxx  sssssss    xx
xxxxssssssssh  xxx
xxxxxxsssssssxxxxx
xxxxxxxxxxxxxxxxxx
