teins etins tiens itens eitns ietns tenis etnis tneis nteis entis netis tines itnes tnies nties intes nites eints ients enits neits inets niets teisn etisn tiesn itesn eitsn ietsn tesin etsin tsein stein estin setin tisen itsen tsien stien isten siten eistn iestn esitn seitn isetn sietn tensi etnsi tnesi ntesi entsi netsi tesni etsni tseni steni estni setni tnsei ntsei tsnei stnei nstei sntei ensti nesti esnti senti nseti sneti tinse itnse tnise ntise intse nitse tisne itsne tsine stine istne sitne tnsie ntsie tsnie stnie nstie sntie inste niste isnte sinte nsite snite einst ienst enist neist inest niest eisnt iesnt esint seint isent sient ensit nesit esnit senit nseit sneit inset niset isnet sinet nsiet sniet
Note: these 'words' (valid or invalid) are all the permutations of the word teins. These words are obtained by scrambling the letters in teins.