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.
dotty doty ditty dot doit duty doat dote doughty titty doody tatty ditto datto tutty deity dowdy dought tet tit tat tot dit tut date dido tout taut dawt tate toit dato deet duet daut tidy didy tody teat dodo toot duit dite dita diet tote data dado titi tutu
jotty potty knotty dotty chitty potto titty mott netty fatty hooty butty bott booty bitty doty shitty putty kitty patty batty otto pouty ratty rotte sooty ditty witty lotto nutty tatty rooty tutty nitty footy gnatty motey lotte jetty natty motto chott gutty chatty jutty motte zooty gouty cutty cotta catty petty rutty shott
dotty dot hottie ditto datto rotte potty potto otto motte motto bott doat lotte cottae cotta jotty ditty doit dote lotto mott doty