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.
relics relocks reliques rollicks relooks rowlocks relax
flics colics beylics relics calicos telcos kliks sulcus flocs silicas killicks rollicks lilacs cowlicks maiolicas licks clicks alecs laics lacs blocs klicks celiacs gallicas slicks flicks talcs beyliks shellacs
relic relique reliquiae relock relook