lewis elwis lweis wleis ewlis welis leiws eliws liews ilews eilws ielws lwies wlies liwes ilwes wiles iwles ewils weils eiwls iewls wiels iwels lewsi elwsi lwesi wlesi ewlsi welsi leswi elswi lsewi slewi eslwi selwi lwsei wlsei lswei slwei wslei swlei ewsli wesli eswli sewli wseli sweli leisw elisw liesw ilesw eilsw ielsw lesiw elsiw lseiw sleiw esliw seliw lisew ilsew lsiew sliew islew silew eislw ieslw esilw seilw iselw sielw lwise wlise liwse ilwse wilse iwlse lwsie wlsie lswie slwie wslie swlie liswe ilswe lsiwe sliwe islwe silwe wisle iwsle wsile swile iswle siwle ewisl weisl eiwsl iewsl wiesl iwesl ewsil wesil eswil sewil wseil sweil eiswl ieswl esiwl seiwl isewl siewl wisel iwsel wsiel swiel iswel siwel
Note: these 'words' (valid or invalid) are all the permutations of the word lewis. These words are obtained by scrambling the letters in lewis.