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.
sell selle sel seal sall cell sill seel seely cella sully sally silly selah cello celli cellae scilla sallow sal sol cel sly sallowy saul zill syli slue solo sola slew silo slow sloe sulu slaw slay sale sail ceil soil sole soli zeal soul ceili solei zoeal
bell ell fell hell jell quell mell knell cell sell dell tell well shell yell el