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.
hula hulloa hila hull haul hullo holla halloa hulloo hilloa hallah holloa halo hell heal hail hall holy hole heil hale howl helo hill heel hili helio hollo haole holly hilly hoyle hooly hallo holey hello hillo