Tam and Mama post

Tam is helping with this post...the following are his thoughts on random letters and spelling his name...
zzzzzzzzzzzzzzxxxffffgggghhhh
tttttttttttttaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

Maybe some numbers?

zzzzzzzzzzzz333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333
666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666666
llllllllllllllllllllllllllllllllllllllllllllllllllllllll
llllllllllllllllllllll
llllllllllll
lllllllll
l
llllll
lll
ll
ll
l
l
tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt

And the shift key...
TTTTTTTTTTTTTTTTTTTTTTTTttttttttttttttttttttttttttTtTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Can you tell what is the favorite letter currently?
uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
44444444444444444444444444444444
4555
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
ccccccccccccccccc