usedc suedc uesdc eusdc seudc esudc usdec sudec udsec dusec sduec dsuec uedsc eudsc udesc duesc edusc deusc seduc esduc sdeuc dseuc edsuc desuc usecd suecd uescd euscd seucd esucd usced suced ucsed cused scued csued uecsd eucsd ucesd cuesd ecusd ceusd secud escud sceud cseud ecsud cesud usdce sudce udsce dusce sduce dsuce uscde sucde ucsde cusde scude csude udcse ducse ucdse cudse dcuse cduse sdcue dscue scdue csdue dcsue cdsue uedcs eudcs udecs duecs educs deucs uecds eucds uceds cueds ecuds ceuds udces duces ucdes cudes dcues cdues edcus decus ecdus cedus dceus cdeus sedcu esdcu sdecu dsecu edscu descu secdu escdu scedu csedu ecsdu cesdu sdceu dsceu scdeu csdeu dcseu cdseu edcsu decsu ecdsu cedsu dcesu cdesu
Note: these 'words' (valid or invalid) are all the permutations of the word usedc. These words are obtained by scrambling the letters in usedc.