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.
shyly shaly shily shelly shoaly shul sheol shill sheal shool shaul chyle shoal shell shiel shawl shall shale chally chilly shaley sheila shallow sial
shyly wryly shily shaly chyle waylay doyly doyley hyla feyly gayly coyly holy phyle phyla ghyll muhly