20 20
AAAAAAAAAAAAAAABBBBB
CCCCDDDDDDDDDDDEEEFF
GGGGHHHHHHIIIIIIIIII
JJJJJJJJJJJJJJJKKKKK
LLLLLLLLMMMMMMMMMMMN
OOOOOOOOOOOOOOOOOPPP
QQQQQQQQRRRRSSSSSSSS
TTTTTUVVVVVVVVVVVVVV
WWWWWWWWWWWWWXXXXYYY
ZZZZZZZZaabbbcdddddd
efgggggggggggggggggg
hhiiiiiiiiiiiiiiijjj
kkkkkkklllllllmmmmmm
nnoooopppppppppppppp
qqqqqqrssssssstuuuuu
vvvvvvvwwwxxxxxxxxxx
yyyyyyzzzzzzzzzzzzzz
00000111111112222222
33445555566666667777
88889999999999999999
