eteps teeps eetps eetps teeps eteps etpes tepes eptes petes tpees ptees eepts eepts epets peets epets peets tepes etpes tpees ptees eptes petes etesp teesp eetsp eetsp teesp etesp etsep tesep estep setep tseep steep eestp eestp esetp seetp esetp seetp tesep etsep tseep steep estep setep etpse tepse eptse petse tpese ptese etspe tespe estpe setpe tsepe stepe epste peste espte septe psete spete tpsee ptsee tspee stpee pstee sptee eepst eepst epest peest epest peest eespt eespt esept seept esept seept epset peset espet sepet pseet speet epset peset espet sepet pseet speet tepse etpse tpese ptese eptse petse tespe etspe tsepe stepe estpe setpe tpsee ptsee tspee stpee pstee sptee epste peste espte septe psete spete
Note: these 'words' (valid or invalid) are all the permutations of the word eteps. These words are obtained by scrambling the letters in eteps.