letvo eltvo ltevo tlevo etlvo telvo levto elvto lveto vleto evlto velto ltveo tlveo lvteo vlteo tvleo vtleo etvlo tevlo evtlo vetlo tvelo vtelo letov eltov lteov tleov etlov telov leotv elotv loetv oletv eoltv oeltv ltoev tloev lotev oltev tolev otlev etolv teolv eotlv oetlv toelv otelv levot elvot lveot vleot evlot velot leovt elovt loevt olevt eolvt oelvt lvoet vloet lovet olvet volet ovlet evolt veolt eovlt oevlt voelt ovelt ltvoe tlvoe lvtoe vltoe tvloe vtloe ltove tlove lotve oltve tolve otlve lvote vlote lovte olvte volte ovlte tvole vtole tovle otvle votle ovtle etvol tevol evtol vetol tveol vteol etovl teovl eotvl oetvl toevl otevl evotl veotl eovtl oevtl voetl ovetl tvoel vtoel tovel otvel votel ovtel
Note: these 'words' (valid or invalid) are all the permutations of the word letvo. These words are obtained by scrambling the letters in letvo.