rents ernts rnets nrets enrts nerts retns ertns rtens trens etrns terns rntes nrtes rtnes trnes ntres tnres entrs netrs etnrs tenrs nters tners renst ernst rnest nrest enrst nerst resnt ersnt rsent srent esrnt sernt rnset nrset rsnet srnet nsret snret ensrt nesrt esnrt senrt nsert snert retsn ertsn rtesn tresn etrsn tersn restn erstn rsetn sretn esrtn sertn rtsen trsen rsten srten tsren stren etsrn tesrn estrn setrn tsern stern rntse nrtse rtnse trnse ntrse tnrse rnste nrste rsnte srnte nsrte snrte rtsne trsne rstne srtne tsrne strne ntsre tnsre nstre sntre tsnre stnre entsr netsr etnsr tensr ntesr tnesr enstr nestr esntr sentr nsetr snetr etsnr tesnr estnr setnr tsenr stenr ntser tnser nster snter tsner stner
Note: these 'words' (valid or invalid) are all the permutations of the word rents. These words are obtained by scrambling the letters in rents.