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.
shaul shul shall shoal shawl shale shaly sheal shoaly shaley sial shallow shell sheol shill shily shool shyly shiel challa chally sheila shelly chalah chaleh challah challie
haul shaul shoal shawl shall hall shaly shale whale hyphal phial hail hale halo wheal hula heal hull caul maul miaul saul waul ghoul sheal shul
shaugh sha shah shaw shay shea sheugh pshaw sauch sheuch shush