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.
seta setae set seat stoa zeta sett stay suet staw stoai sutta suety satay settee sot sit sat sty sad sadi sued suit stow said stew stey side cete seed site sati sade soot sate soda saute seedy sooty stewy stoae suede suite
beta eta feta geta meta pieta seta zeta chaeta ta et