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.
haiku haku haik haika hick hike hawk hake hack hokku hoick hackee hawkie hickie hackie hickey hawkey hag hic hug heck hock hoke hook howk huck huic
haiku haik haika haku kaiak paik raku