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.
marrams marimbas
marrams rams taramas drams dirams zirams praams ramus grams reams roams arames breams ferrums forams ihrams frames jorams carroms crams creams gouramis gramas paramos prams dioramas dramas dreams trams