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.
pipet pipette piped pipit pipped poppet puppet paupiette pooped popped pupate pupped poppied
pipet pet whipt tippet tapeta sippet roupet peat pieta piety poet biped lappet nepeta moppet piped pipit poppet puppet repeat riped siped dipt tappet whippet wiped