fffffffffffffffffffffffffffffffffffff
ddddddddddddddddddddddddd
dddddddddddddddddddddd
ddddddddddddddd
ddddddddddddddddd
dddddddddddddddddddddddddddd
dddddddddddddddddddddddd
xxxxxxxxxxxxxxxxxxxxxxx
fffffffffffff
cccccccccccccccccccc
eeeeeeeeeeeeeeeeeee
eeeeeeeeeeeeeeeeeeeeeee