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.
lobes lobs lobbies loobies lobos lubes labs libs lowboys
obes lobes robes bes abbess babies babes abbes abbeys mobs buboes kebbies gobs nobs nabes jubes hebes oboes jobs goboes mabes gabies hobs gibes beys rebbes syboes yobboes lobbies tubes tabes rubbies doobies dobbies kobos sobas rabbies hoboes rubies kibbehs boobies cobbs obeys phoebes jibes loobies lobos cubbies bobs kobs bobbies bubbies bawbees knobs pubes hubbies baubees obis gobies obese cobs newbies cubes maybes cabbies lobs beebees obas bees gobos hobos rabies boobs kibes kibbes ribes lubes fobs robs gybes sabes kibeis sobs daubes vibes dobies tabbies rubes tobies yabbies hobbies yobs
lobe lob lobby lobo looby lowboy lube blob glob globby globe slob slobby