xxxxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxxxx
xxxxxx   rr    xxxxx
xxxxx    rr     xxxx
xxxx     rrr    rxxx
xxx       rr    rrxx
xx      s  ss  rrrrx
xx   rrss  sssrrr  x
xxh  rrrss ssrrr   x
xxssssrrs  s rr    x
xx sssss   p       x
xx  ssss m         x
xx   ss       m    x
xx          rr     x
xx          rrm    x
xxx         rrr   xx
xxxx         rrrrxxx
xxxxx         rrxxxx
xxxxxx        rxxxxx
xxxxxxxxxxxxxxxxxxxx
