rekey erkey rkeey kreey ekrey kerey reeky ereky reeky ereky eerky eerky rkeey kreey rekey erkey kerey ekrey ekery keery eekry eekry keery ekery rekye erkye rkeye kreye ekrye kerye reyke eryke ryeke yreke eyrke yerke rkyee kryee rykee yrkee kyree ykree ekyre keyre eykre yekre kyere ykere reeyk ereyk reeyk ereyk eeryk eeryk reyek eryek ryeek yreek eyrek yerek reyek eryek ryeek yreek eyrek yerek eeyrk eeyrk eyerk yeerk eyerk yeerk rkeye kreye rekye erkye kerye ekrye rkyee kryee rykee yrkee kyree ykree reyke eryke ryeke yreke eyrke yerke keyre ekyre kyere ykere eykre yekre ekeyr keeyr eekyr eekyr keeyr ekeyr ekyer keyer eyker yeker kyeer ykeer eeykr eeykr eyekr yeekr eyekr yeekr keyer ekyer kyeer ykeer eyker yeker
Note: these 'words' (valid or invalid) are all the permutations of the word rekey. These words are obtained by scrambling the letters in rekey.