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.
cell cello cella celli cel cellae sell ceil selle ceili scilla sel seal zill sill seel sall zeal cilia sally seely selah silly sully zoeal
bell ell fell hell jell quell mell knell cell sell dell tell well shell yell el