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.
wreck reck wrick wrack wreak rec rock reek rack ruck rick rekey reeky rocky rickey reg roc rake raki raku rook ryke
wreck reck rec deck peck feck heck geck gecko keck beck neck pecky rick rock ruck wreak rack wrack wrick reek check