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.
contour cantor condor contra candour cointer counter country coendure cointreau canter candor gantry kantar qintar gaunter gauntry quintar
contour santour donator senator santoor century centaur ceinture pandour monitor cantor mentor candour jointure janitor genitor venturi venture santur denture chantor
conto canto condo connote conoid conte coontie count county