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.
shaughs sheughs shahs choughs shaws shays sheas chiaus shes chays shoos chase chaos shoes chaws shies shews chais shows chaise chasse
shaughs haughs boughs heughs doughs choughs sheughs ahs