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.
pugs pigs pegs pukes peags pucks piques piggies pacs pecs pics pacas picks peeks pokes paiks pikas packs picas pikis pekes pocks pikes peaks pecks
bugs fugs vugs hugs jugs lugs mugs pugs rugs dugs tugs chugs