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.
recurred recarried required record recrate recreate regard regret recruit regrade regrate regreet
recurred curred chequered squared secured scoured scarred required recarried liquored leaguered figured augured quired quarried garred curried cured carried scurried skirred squired shikarred