ffffffffffffffffffffffffffffff
gggggggggggggggggggggggggggggggggggg
tttttttttttttttttttttttttttttttttttttttt
ddddddddddddddddddddd
DDDDDDDDDDDDDDDDDDDDD
ffffffffffffffffffffffffffffffff
dddddddddddddddddddddddddddddddd
EEEEEEEEEEEEEEEEEEEEEEEEEEE
ffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffff
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD