1
ABCDEF
aaaaaaaaaaaaaaaaaa
bbbbbbbbbbbbbbb
ccccccccccccccccccccc
dddddddddddddddddddddddd
2
FGHIJKLM
aaaaaaaaaa
bbbbbbbbb
ccccccccccc
ddddddddddddddddddd
3
xxxxxxxxxxxxx
aaaaaaa
bbbbbbbbbb
ccccccccccccc
4
bbbbbbbbbbbbbb
aaaaaaaa
bbbbbbbbbbbbbbb
ccccccccccccccc
ddddddddddddd
5
aaaaaaaaaaaaaaa
aaaaaaaaaa
bbbbbbbbb
cccccccccccc
ddddddddddddd