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.
learnt learned
learnt rant cornet gerent carnet hairnet variant hornet forint errant maranta front gurnet print grunt hydrant garnet truant currant warrant courante burnt brunt arrant couranto courant jurant coranto riant runt horrent brant brent rent parent burnet rerent guaranty torrent grant tyrant current warranty
learn larine lierne blarney clarion