xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx
xxxxxx     rrrrxxxxx
xxxxx     h rrrrxxxx
xxxxr        rrrrxxx
xxxrr     h   rrrrxx
xxrrr         rrrrrx
xxrrr           rrrx
xx      h        rrx
xx         f      rx
xx       p         x
xxf  rr h          x
xx   rrr           x
xx    rrr          x
xx     rrr         x
xxx    mrr       rxx
xxxx             xxx
xxxxx           xxxx
xxxxxx         xxxxx
xxxxxxxxxxxxxxxxxxxx
