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.
rachial racial rachilla racially rachillae rashly retial richly
lochial rachial tetchily social chiel pitchily chile chili chill bitchily botchily faucial aecial facial fecial itchily catchall mochila nuchal patchily racial techily touchily
ratch reach roach brach brachia orach orache trachea tracheae