kresh rkesh kersh ekrsh reksh erksh krseh rkseh ksreh skreh rskeh srkeh kesrh eksrh kserh skerh eskrh sekrh reskh erskh rsekh srekh esrkh serkh krehs rkehs kerhs ekrhs rekhs erkhs krhes rkhes khres hkres rhkes hrkes kehrs ekhrs khers hkers ehkrs hekrs rehks erhks rheks hreks ehrks herks krshe rkshe ksrhe skrhe rskhe srkhe krhse rkhse khrse hkrse rhkse hrkse kshre skhre khsre hksre shkre hskre rshke srhke rhske hrske shrke hsrke keshr ekshr ksehr skehr eskhr sekhr kehsr ekhsr khesr hkesr ehksr heksr ksher skher khser hkser shker hsker eshkr sehkr ehskr heskr shekr hsekr reshk ershk rsehk srehk esrhk serhk rehsk erhsk rhesk hresk ehrsk hersk rshek srhek rhsek hrsek shrek hsrek eshrk sehrk ehsrk hesrk sherk hserk
Note: these 'words' (valid or invalid) are all the permutations of the word kresh. These words are obtained by scrambling the letters in kresh.