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.
duchess douches duchies touches ditches dashes dachas dishes tushes taches teaches techies datchas deashes tushies tachs techs dashis toshes
chess duchess ketches vichies laches beaches liches catches lichees loaches roaches baches batches vouches chews aitches mooches cutches leaches quiches hotches muches hitches pooches itches fitchews rouches wiches ratches touches teaches lyches duchies matches douches seiches retches naches niches pitches notches etches fiches wretches rechews leeches patches aches cooches hoochies riches fetches vetches bitches quitches gouaches hatches mouches maches ouches boches caches quaiches miches poaches fitches vouchees botches hooches ditches couches hootches letches bouchees latches coaches nautches hutches mutches butches leches eches beeches reaches schuss echoes nitchies peaches pouches reechoes rotches wyches taches ruches techies watches lychees witches