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.
wyches chews chess cheese cheesy chis chez shes chaos chose chias shews chays chaws chais shies shoes sheas chows chase chasse chiaus choice chaise choose choosy chouse chowse choosey choughs sheughs
wyches hes shies cess shoes shews sheas chez chews chess wheys whews cues shes hues ghees hoes hies hews hehs haes chis cees
wych lych lychee wich yech yechy yuch