sssssssssssssssss
XXXXXXXXXXXXX
ssssss
fffffffffffffffffffffffffffffff,
dddddddddddddd
dddddddddddddd
sssssssssssssss
RRRRRRRRRRRRRRRRRRR
fffffffffffffffffffffff
YYYYYYYYYYYY
ddddddddddddddddd
DDDDDDDDDDDD
XXXXXXXXXXXXXXXXXXX
DDDDDDDDDDDDDDDDD
DDDDDDDDDDDDDDDDDD
DDDDDDDDDD
dddddddddddd
zzzzzzzzzzzzzzzzzzzzzzz
DDDDDDDDDDDDD
DDDDDDDDDDDDDD