xxxxxxxxxxxxxxx
ffffffffffffffffff
fffffffffffffffffff
rrrrrrrrrrrrrrrrrrrrrrrrr
HHHHHHHHHHHHHHHHHHHHHHHH
tttttttttttttttttttttttt
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
sssssssssssssss
yyyyyyyyyyyyyyyyyyyyyyyyyyy
dddddddddddddddddddddddddddd
fffffffffffffffffffffffffff
eeeeeeeeeeeeeeeeeeeeeeeeeeeeeee