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.
laichs liches lichis laches litchis loaches lichees leaches latches lochs lashes leches lyches leashes leeches letches lychees lushes
ichs quaichs laichs mooches maches botches cutches hutches leaches etches lochs echos fichus gotchas douches witches muches techs rouches miches seiches pouches butches retches ouches machs pechs fetches litchis sheuchs watches tachs datchas wretches roaches ratches poaches patches niches nachas eches cooches ketches nachos leeches baches itches liches hootches chis wyches quitches catches hatches boches batches beaches quaiches hitches beeches vouches machos aches fitches matches aitches mouches mutches caches mochas gauchos naches vetches fiches lyches heuchs couches hooches lichis laches coaches notches bitches letches gouaches latches pooches pitches hotches rachis loaches riches pachas leches quiches peaches nautches sauchs dachas ditches reaches taches teaches rotches touches wiches ruches chichis yechs
laich latch leach leachy lich lichee lichi litchi loach clach cliche