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.
wattapes watapes wataps
etapes retapes watapes wattapes stapes tapes taps wataps taupes stupes biotopes stipes biotypes neotypes ataps metopes potpies types topes stopes cotypes tapis tapas retypes