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.
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diabetes bets dubieties zibets ebbets debates rebates niobites niobates qubytes gobbets abets gibbets rabbets bates bytes butes bites betas beets beats abates ubieties