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.
dachas datchas tachs dashes dashis taches ditches douches duchess duchies teaches techs dishes deashes techies touches
gotchas pachas dachas mochas nachas datchas ichs laches seiches chays leches couches hooches coaches shaws facias butches cashaws muches beeches chase pouches ruches bitches chaws echos sheas boches baches matches riches cooches reaches quaichs shahs pitches mutches sheuchs witches watches techs tachs douches notches rachis poaches patches latches nautches kashas naches quaiches pechs fiches mouches fitches vouches botches hotches lyches lichis chias cutches machos etches letches gouaches itches laichs beaches retches hitches nachos chaos sashays roaches quitches liches pashas geishas pshaws sauchs eches aches loaches wyches batches maches fichus caches leaches hatches litchis lochs quiches chais rotches miches chis hootches aitches cushaws gauchos ketches niches catches vetches shays hutches fetches mooches rouches wretches ouches machs bashaws leeches peaches pooches ratches heuchs ditches taches teaches touches wiches chichis yechs
dacha dash dashi dashy datcha duchy tach tache