nietc inetc neitc enitc ientc eintc nitec intec ntiec tniec itnec tinec netic entic nteic tneic etnic tenic ietnc eitnc itenc tienc etinc teinc niect inect neict enict ienct einct nicet incet nciet cniet icnet cinet necit encit nceit cneit ecnit cenit iecnt eicnt icent cient ecint ceint nitce intce ntice tnice itnce tince nicte incte ncite cnite icnte cinte ntcie tncie nctie cntie tcnie ctnie itcne ticne ictne citne tcine ctine netci entci nteci tneci etnci tenci necti encti nceti cneti ecnti centi ntcei tncei nctei cntei tcnei ctnei etcni tecni ectni cetni tceni cteni ietcn eitcn itecn tiecn eticn teicn iectn eictn icetn cietn ecitn ceitn itcen ticen icten citen tcien ctien etcin tecin ectin cetin tcein ctein
Note: these 'words' (valid or invalid) are all the permutations of the word nietc. These words are obtained by scrambling the letters in nietc.