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.
segos segs sagos segues sags secs sequoias sikes sooks seeks soaks skies souks sykes socks sakes sagas sokes scows skees socas skews zygose sickos saigas sickies sickees sex sox soukous sacs sexy sics skas skis suks suqs
egos segos gos tegs degas dagos zygose bigos negus goes pegs goos goys aqueous begs goas chigoes rugosa eggs gogos legs chegoes teggs megs decos logos dagoes segs negs rugous kegs sagos rugose regs peags yeggs