yrneh ryneh ynreh nyreh rnyeh nryeh yrenh ryenh yernh eyrnh reynh erynh ynerh nyerh yenrh eynrh neyrh enyrh rneyh nreyh renyh ernyh neryh enryh yrnhe rynhe ynrhe nyrhe rnyhe nryhe yrhne ryhne yhrne hyrne rhyne hryne ynhre nyhre yhnre hynre nhyre hnyre rnhye nrhye rhnye hrnye nhrye hnrye yrehn ryehn yerhn eyrhn reyhn eryhn yrhen ryhen yhren hyren rhyen hryen yehrn eyhrn yhern hyern ehyrn heyrn rehyn erhyn rheyn hreyn ehryn heryn ynehr nyehr yenhr eynhr neyhr enyhr ynher nyher yhner hyner nhyer hnyer yehnr eyhnr yhenr hyenr ehynr heynr nehyr enhyr nheyr hneyr ehnyr henyr rnehy nrehy renhy ernhy nerhy enrhy rnhey nrhey rhney hrney nhrey hnrey rehny erhny rheny hreny ehrny herny nehry enhry nhery hnery ehnry henry
Note: these 'words' (valid or invalid) are all the permutations of the word yrneh. These words are obtained by scrambling the letters in yrneh.