tttttttttttttttttttttttttttt
ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
ffffffffffffffffffffffffffffffffffffffffffff
ggggggggggggggggggggggggggggggggggrrrrrrrrrrrrrrrrrrrrrrrrrrrffffffffffffffff
7777777777777777777777777777777777777777
777777777777777777777777777777777777777777777777777777777