xxxxxxxxxxxxxx
ssssssssssssssssssssss
sssssssssssssssssssss
ddddddddddddddddddd
cccccccccccccccccccccccccc
cccccccccccccccccccc
xxxxxxxxxxxxxxx
cccccccccccccccccc
ggggggggggggggggggggggggggggggggg
gggggggggggggggggggggggggg
vvvvvvvvvvvvvvvvvv
gggggggggggggggggg