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