inert niert ienrt einrt neirt enirt inret niret irnet rinet nriet rniet iernt eirnt irent rient erint reint nerit enrit nreit rneit ernit renit inetr nietr ientr eintr neitr enitr inter niter itner tiner ntier tnier ietnr eitnr itenr tienr etinr teinr netir entir nteir tneir etnir tenir inrte nirte irnte rinte nrite rnite intre nitre itnre tinre ntire tnire irtne ritne itrne tirne rtine trine nrtie rntie ntrie tnrie rtnie trnie iertn eirtn iretn rietn eritn reitn ietrn eitrn itern tiern etirn teirn irten riten itren tiren rtien trien ertin retin etrin terin rtein trein nerti enrti nreti rneti ernti renti netri entri nteri tneri etnri tenri nrtei rntei ntrei tnrei rtnei trnei ertni retni etrni terni rteni treni
Note: these 'words' (valid or invalid) are all the permutations of the word inert. These words are obtained by scrambling the letters in inert.