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