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.
weakon weaken wagon waken waggon wigan woken
weakon koan leukon waken takin deacon agon akin bacon beacon beckon eikon ikon kaon macon oaken racon reckon rockoon daikon taken wagon weaken shaken
weak wack wacke wacko wacky wake wauk week weka awake tweak tweaky