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.
hell hello helo hull heil heel heal hill hall hullo hallo holla helio hilly hollo hillo holly halloo holloa hallah hulloa hollow halloa hilloa hulloo holloo hallow hale hula howl holy halo haul hail hila hole hili haole holey hooly hoyle
bell ell fell hell jell quell mell knell cell sell dell tell well shell yell el