wfair fwair wafir awfir fawir afwir wfiar fwiar wifar iwfar fiwar ifwar waifr awifr wiafr iwafr aiwfr iawfr faiwr afiwr fiawr ifawr aifwr iafwr wfari fwari wafri awfri fawri afwri wfrai fwrai wrfai rwfai frwai rfwai warfi awrfi wrafi rwafi arwfi rawfi farwi afrwi frawi rfawi arfwi rafwi wfira fwira wifra iwfra fiwra ifwra wfria fwria wrfia rwfia frwia rfwia wirfa iwrfa wrifa rwifa irwfa riwfa firwa ifrwa friwa rfiwa irfwa rifwa wairf awirf wiarf iwarf aiwrf iawrf warif awrif wraif rwaif arwif rawif wiraf iwraf wriaf rwiaf irwaf riwaf airwf iarwf ariwf raiwf irawf riawf fairw afirw fiarw ifarw aifrw iafrw fariw afriw fraiw rfaiw arfiw rafiw firaw ifraw friaw rfiaw irfaw rifaw airfw iarfw arifw raifw irafw riafw
Note: these 'words' (valid or invalid) are all the permutations of the word wfair. These words are obtained by scrambling the letters in wfair.