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.
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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