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.
congo congou conga cooing conk gong cooeeing going conky cuing conic cangue cueing quango gang king konk
bongo congo mongo bong mooing dingo wrong pong pengo nonego booing fungo jingo hong looing boing dong tango tonga shooing conga congou bingo lanugo tong mango hypoing doing song long pooing donga pingo wooing gong quango mungo going mongoe lingo cooing young
con coign coin cone coney coni conn cony coon icon cogon coigne scone