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.
durocs trocks darics tarocs drouks drecks turacos turkois drogues turacous turquois touracos derricks drugs dregs dreks dorks torcs drags turks darks dirks trogs turquoise torics tricks trigos trucks taroks triacs troaks tracks trokes drakes darkeys darkies hydroxy tricksy troikas turkeys druggies
rocs tarocs durocs crocs frocks mercs arcus darics seracs circus progs orcs trocks torcs barcas groks recs rocks arcs brocks narcs lyrics cercus heroics marcs taroks sargos sorgos frogs pargos orcas largos torics narcos grogs crocus crocks cariocas cargos trogs