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.
subas subahs subs subbase subbass sobas subsea sabs sibs sobs soubise sabes sibbs ceibas syboes
subas jubas tubas bas nubs daubs cubs bubus cobias fubs fubsy hubs babas tibias diabase subbase phobias abas obas pubes pubs rubs ceibas subahs tubes chubs nubias sobas bubs baas jubes boas bias bays bass base cubes pubis lubes jubbahs subs rubus rubes abbas bubbas subbass daubes debase dubs obias abase tubs shibahs
suba subah sub soba isba tsuba