rifty irfty rfity frity ifrty firty ritfy irtfy rtify trify itrfy tirfy rftiy frtiy rtfiy trfiy ftriy tfriy iftry fitry itfry tifry ftiry tfiry rifyt irfyt rfiyt friyt ifryt firyt riyft iryft ryift yrift iyrft yirft rfyit fryit ryfit yrfit fyrit yfrit ifyrt fiyrt iyfrt yifrt fyirt yfirt rityf irtyf rtiyf triyf itryf tiryf riytf irytf ryitf yritf iyrtf yirtf rtyif tryif rytif yrtif tyrif ytrif ityrf tiyrf iytrf yitrf tyirf ytirf rftyi frtyi rtfyi trfyi ftryi tfryi rfyti fryti ryfti yrfti fyrti yfrti rtyfi tryfi rytfi yrtfi tyrfi ytrfi ftyri tfyri fytri yftri tyfri ytfri iftyr fityr itfyr tifyr ftiyr tfiyr ifytr fiytr iyftr yiftr fyitr yfitr ityfr tiyfr iytfr yitfr tyifr ytifr ftyir tfyir fytir yftir tyfir ytfir
Note: these 'words' (valid or invalid) are all the permutations of the word rifty. These words are obtained by scrambling the letters in rifty.