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.
fleeches fleches fletches filches fleshes flitches flashes flushes
leches fleches leeches fleeches caleches lychees blotches liches glitches laches culches fletches lyches lichees caliches letches cloches filches zilches slatches guilloches loaches mulches bleaches belches cliches leaches clutches latches cultches flitches gulches fleshes klatches pleaches slouches welches