xxxxxxxxxxxxxxxxxx
xxxxxxxxxxxxxxxxxx
xxxxxxss  rrrxxxxx
xxxxssss  rr f xxx
xxx  ss  rrr    xx
xxx      rr     xx
xx               x
xx       p fs    x
xx        ffsss  x
xx      rr   s   x
xx     rrr ssss  x
xxr    rrs ssss  x
xxrr  ssssss  s  x
xxxr    sss     xx
xxxr     s      xx
xxxx     rrr   xxx
xxxxxx   rrrrxxxxx
xxxxxxxxxxxxxxxxxx
