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.
daubs daubes dabs dubs diabase debs tubs dibs tabs dubious tubas tabes tubes tabus doughboys debase dobies tabbis taboos dobbies doobies tabbies
daubs abs babes cabs cubs abas abos jubas babas abys babus rubs pubs kabs pubes subas nabs dabs nabes beaus bubus tabes tabus tubes wabs sabes fubsy gabs pubis lubes bubs jubes cubes hubs habus jabs fubs daubes rubes labs fabs rubus nubs sabs nabis subs mabes dubs tabs tubas tubs chubs