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.
maraca marc markkaa marka margay markka myrica mark merc marque marquee
maraca erica triac touraco circa orca verruca wrack areca arrack barca barrack raga hayrack rack carack carrack crack curacao curacoa lorica myrica rerack serac track turaco
mara mar maar mair mare maria marrow marrowy marry mora morae moray mura