reens erens reens erens eerns eerns renes ernes rnees nrees enres neres renes ernes rnees nrees enres neres eenrs eenrs eners neers eners neers reesn eresn reesn eresn eersn eersn resen ersen rseen sreen esren seren resen ersen rseen sreen esren seren eesrn eesrn esern seern esern seern rense ernse rnese nrese enrse nerse resne ersne rsene srene esrne serne rnsee nrsee rsnee srnee nsree snree ensre nesre esnre senre nsere snere rense ernse rnese nrese enrse nerse resne ersne rsene srene esrne serne rnsee nrsee rsnee srnee nsree snree ensre nesre esnre senre nsere snere eensr eensr enesr neesr enesr neesr eesnr eesnr esenr seenr esenr seenr enser neser esner sener nseer sneer enser neser esner sener nseer sneer
Note: these 'words' (valid or invalid) are all the permutations of the word reens. These words are obtained by scrambling the letters in reens.