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.
shock chock shuck shack shook shacko shog shako chick sheik choke choky chook check shake chuck shaky chokey chucky sheikh chickee chic shag
hock shock chock rock bock dock chuck choky howk sock hack jocko knock heck hick hoick huck shuck pock cock hoke check chick hook cocky shack chook choke lock whack shook jock socko rocky pocky nock mock yock
shoe shoo show showy hooch hoochie hotch