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.
helio helo hello heel heal halo hili hell heil hallo hullo hillo hollo hulloa hollow halloa hallow halloo holloo holloa hilloa hoolie hulloo hail hall haul hila hill hole holy howl hula hull hale
helio niello teloi duello deli cello celli ceili polio olio nielli belie lilo jello helo hello folio below duelli telia wheelie