dddddddddddddddddddddd
ffffffffffffffffffff
ccccccccccccccccccccccc
rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
ddddddddddddddddddddddddddddddddddddddddd
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
CCCCCCCCCCCCCCC
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
vvvvvvvvvvvvvvvvvvv
ttttttttttttttttttttttttttt