drant rdant darnt adrnt radnt ardnt drnat rdnat dnrat ndrat rndat nrdat danrt adnrt dnart ndart andrt nadrt randt arndt rnadt nradt anrdt nardt dratn rdatn dartn adrtn radtn ardtn drtan rdtan dtran tdran rtdan trdan datrn adtrn dtarn tdarn atdrn tadrn ratdn artdn rtadn tradn atrdn tardn drnta rdnta dnrta ndrta rndta nrdta drtna rdtna dtrna tdrna rtdna trdna dntra ndtra dtnra tdnra ntdra tndra rntda nrtda rtnda trnda ntrda tnrda dantr adntr dnatr ndatr andtr nadtr datnr adtnr dtanr tdanr atdnr tadnr dntar ndtar dtnar tdnar ntdar tndar antdr natdr atndr tandr ntadr tnadr rantd arntd rnatd nratd anrtd nartd ratnd artnd rtand trand atrnd tarnd rntad nrtad rtnad trnad ntrad tnrad antrd natrd atnrd tanrd ntard tnard
Note: these 'words' (valid or invalid) are all the permutations of the word drant. These words are obtained by scrambling the letters in drant.