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.
blokes blocks blogs bulks blocs balks bilks bullocks bollocks baulks blacks bleaks beyliks bowlegs belleeks bellicose belgas bollox belugas beylics
blokes alkies palookas kylikes clocks hillocks calicoes flukes flocks flakes folkies bullocks bollocks sulkies silkies talookas rowlocks shylocks relocks blocks luckies folks relooks pollocks mullocks killocks holks cloaks lakes likes lackeys locks locoes looks talkies slakes shlocks selkies yolks
bloke balk balky bilk bloc block blocky blog bulk bulky obloquy