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.
cuifs coifs cuffs quiffs coiffes kifs guffs coffs kufis caffs cafes coofs kiefs kaifs coiffeuse cuvees cavies quaffs coughs coffees guffaws quaighs guvs kafs kefs
cuifs ifs kaifs kiefs kifs kufis quiffs miffs guffs knifes reifs poufs rifs seifs difs dufus tufas waifs wifes chufas neifs cuffs coifs puffs huffs fifes fiefs buffs biffs luffs jiffs muffs pouffs naifs riffs ruffs diffs duffs tiffs tuffs whiffs chiefs chuffs
cuif coif coiffe cuff quiff scuff