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.
pashed pished pushed patched peached poached peched pitched pooched pouched
ashed pushed dashed cashed hashed fashed noshed bushed mashed dished rushed joshed hushed leashed fished quashed tushed gushed whooshed shushed washed lushed wished wooshed coshed sashed lashed bashed pished pashed meshed gnashed whished mushed cowshed shed deashed moshed gashed ached eched bached reshoed botched pitched ouched hitched peached beached retched roached cached patched shied itched niched teched douched letched miched touched leeched latched shoed coached bitched pooched notched ditched shod beachhead hatched hotched reached shad etched poached couched peched mouched reechoed reshod matched ruched fetched leched pouched hutched batched echoed watched leached tetched wretched witched vouched hashhead mooched
pash pasha pacha pish posh pshaw push pushy