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.
haul halo hull heal hale hula hall hail hullo hallo haole halloa hallow hulloo halloo hulloa hallah hill hila hili helo hell hole holy heel heil howl helio hello hillo hilly holey holla hollo holly hooly hoyle
haul caul maul miaul saul waul shaul al