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.
chias chiaus chis chais chaos chase chaws chays chaise chasse chose sheas shahs shies shaws chess chews shays chows choosy chowse chouse choose choice cheesy cheese wyches choosey choughs shaughs chez shes
chias his has sheas shaws chis haws ghis phase phis haes hahs chaws hays hies bias chais chase chays hiss chaos chiaus pias shahs raias shays rias shies
chiao chia chi chai chao chaw chay ciao chichi