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.
selle sell sel cellae seal sill seel cell slew sall sole sale celli selah cello cella sally solei sully seely silly scilla sallow sal sol sly sallowy cel zeal slaw sulu soil soul sail sola ceil slow soli saul solo slue silo slay syli sloe zill
belle selle ell mell gelee mulley quell jelly mallei tele alley ghillie taille jell bell belie villae allee hell collie boulle killie mollie rille shelly telly chelae willie nielli welly well tulle cellae gulley nellie cello pollee paella duelli cell billie dell bullae quelea niello valley fille felly tell galley jello wheelie fell wallie duello delly callee gillie belly dele nelly volley faille shell felloe knell sell celli cella rouille pulley pele fella hello mouille challie mille melee mallee kelly telae tuille wellie yell