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.
fille faille file fill filly fillo fil villae felloe filo flea flew flue ghillie foil fell flee vill fail fley vile fila fall floe full folly foley fella fully villa felly villi voile fellow flooey fellah volley foully follow flooie valley fallow flu fly fuel vole viol feel vial feal vail flay flow fool flaw foul vale fowl foal veil
fille mille faille taille tuille rouille rille mouille ill hill pilei guile zill callee bullae pilea mill pill alley gilly villae maill bailey jill selle killie gulley mulley felloe volley pulley till shill chilli chile willy will while wallie bailie dill nill voile collie silly gillie scilla riley illy bailee hilly filly tile bill maile billie vile villi fill pile allee mallee cellae valley mile quill dilly boulle belle rill file pollee fillo ghillie galley mollie gill billy hillo toile villa nellie mallei ilea rile kill sill vill bile tulle wellie wile willie challie chill chilly yill