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.
cusks casks cuscus cusecs cassocks cossacks couscous cosecs kiosks casques caciques caziques
husks rusks cusks musks busks dusks tusks disks mosks tasks bisks skis askos desks asks suks waesucks risks tussucks skas basks kiosks sucks casks masks bosks tsks misguess souks zouks discuss whisks