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.
lagune lacune laguna lacunae lagan lacuna lagoon ligan logan logon leggin leukon logania
lagune gun doggone soigne gane laguna gaun gone guan kune agone begun begone beguine beigne bygone equine coigne lacunae lacune signee soignee shogun
lag laogai league flag flaggy clag plague plaguey plaguy slag slaggy