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.
reflow reflew refel refly refeel refell rueful refall refile refuel refill ruefully rifle revel ravel raffle reveal revile rifely riffle ruffle ruffly ravelly reavail revalue reveille
flow reflow fallow fellow filo flaw flew floe follow fowl beefalo buffalo peafowl reflew seafowl
ref reef reefy reif reify tref trefah