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.
vial viol vail vile veil vale vill veal viola villa phial voile vealy villi value voila villae valley fil foil vela fill filo foal fila fall file feal fail vole fille fillo filly folia
phial vial pial rial dial sial al