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.
sykes skies skees sakes skews sokes sikes sickies sickees skis segs suks secs skas souks sacks skuas sooks socks sucks soaks segos sikas sakis sicks seeks sickos segues sex sukkahs soukous sequoias sacs sags sexy sics suqs
fykes sykes tykes rykes dykes jokes kikes kues hawkeys kaes cakes kegs tokes rakes hawkies dickeys likes hokes geckoes lakes lackeys okehs luckies pokeys jakes bikies hackees keas skies ukes yoks dickies yikes shakoes dekes shackoes chokes skews wakes tekkies rookies mikes sickees hookeys sokes hakes hockeys sikes keys duckies quakes nookies hookies makes ekes bikes gawkies rickeys nukes takes akees fakes pikes rakees jukes jockeys hackies quickies tikes cokes cookies pukes hickies cookeys bakes mickeys cukes okes ackees sakes bookies pokes buckoes dikes mokes jackies rekeys sickies pokies hikes hickeys skees dukes pekoes pekes wackes chickees chuckies shakes yaks yokes yuks
syke sake sike skee skew skiey soke askew