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.
fell felly fella fellah felloe fellow full fall fill fuel feal feel fillo fully folly feyly fille filly follow faille fallow foully fly flu fil floe foil fowl fila flow flew fley flue vela flay fail flee vill filo foal veal flea fool foul flaw file veil flawy foley folia folio ghyll vealy villa villi
bell ell fell hell jell quell mell knell cell sell dell tell well shell yell el