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.
trugs drugs trogs trigs trucks trigos tragus teargas torques turquois turacous druggies torcs turks dregs drags treks turquoise drouks trokes taroks trocks traiks tarocs tracks torics triacs troaks trikes tricks drogues terraqueous tricksy troikas turacos turkeys turkois touracos
rugs drugs shrugs frugs trugs bergs grogs trigs brigs erugos frags frigs bourgs crags virgas progs cercus sargos drags brags ergs rerigs burgs teargas grigs argus dregs sorgos circus arcus largos pargos prigs cargos rags frogs regs rigs trogs aerugos
trug drug druggie druggy terga trig trigo trog truck struck