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.
lacune lacunae lacuna lagune laguna lagan ligan logan lagoon leukon logania
lacune cane cone kune acne beguine equine vicuna lacuna lacunae lagune recane scone decane chicane
lac lack lackey laic alack black flack clack plack slack