rines irnes rnies nries inres nires riens irens reins erins ierns eirns rneis nreis renis ernis neris enris iners niers ienrs einrs neirs enirs rinse irnse rnise nrise inrse nirse risne irsne rsine srine isrne sirne rnsie nrsie rsnie srnie nsrie snrie insre nisre isnre sinre nsire snire riesn iresn reisn erisn iersn eirsn risen irsen rsien srien isren siren resin ersin rsein srein esrin serin iesrn eisrn isern siern esirn seirn rnesi nresi rensi ernsi nersi enrsi rnsei nrsei rsnei srnei nsrei snrei resni ersni rseni sreni esrni serni nesri ensri nseri sneri esnri senri inesr niesr iensr einsr neisr enisr inser niser isner siner nsier snier iesnr eisnr isenr sienr esinr seinr nesir ensir nseir sneir esnir senir
Note: these 'words' (valid or invalid) are all the permutations of the word rines. These words are obtained by scrambling the letters in rines.