You can generate the sentences with something like this:

<?php

$sentence = "Keep Calm And Carry On";

$replacements = array('Carry' => 'Other', 'Dictionary', 'Words', 'On' => 'A Lot', 'Off', 'Them', 'Us');

echo strtr($sentence, $replacements);

?>

Once you've done that, simply use a Macro to add it to Amazon.