I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
perlite pearlite puerility pearled periled prelate prolate perilled parled purled prelude pyralid preallot preload
marlite pearlite perlite relit aerolite firelit variolite ruralite troilite uralite
pearl pearly peril perilla puerile purlieu