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.
sulfite sulfide sulfate sulphite sulfid sylvite sulphide sulphate salivate salified selfed slight sealift sluffed sulphid solvate sleight sleighed salved slaved solved salvoed sleaved sleeved sylphid
sulfite sulfate sulfide sylvite