Here are two entertaining emails exchanged between father
and son.

Dear Dad,

$chool i$ really great. I am making lot$ of friend$ and
$tudying very hard.
With all my $tuff, I $imply can’t think of anything I need,
$o if you would like, you can ju$t $end me a card, a$ I
would love to hear from you.

Love,
Your $on.

Dear Son,

I kNOw that astroNOmy, ecoNOmics, and oceaNOgraphy are
eNOugh to keep even an hoNOr student busy. Do NOt forget that
the pursuit of kNOwledge is a NOble task, and you can never
study eNOugh.

Love,
Dad