shlew hslew slhew lshew hlsew lhsew shelw hselw sehlw eshlw heslw ehslw slehw lsehw selhw eslhw leshw elshw hlesw lhesw helsw ehlsw lehsw elhsw shlwe hslwe slhwe lshwe hlswe lhswe shwle hswle swhle wshle hwsle whsle slwhe lswhe swlhe wslhe lwshe wlshe hlwse lhwse hwlse whlse lwhse wlhse shewl hsewl sehwl eshwl heswl ehswl shwel hswel swhel wshel hwsel whsel sewhl eswhl swehl wsehl ewshl weshl hewsl ehwsl hwesl whesl ewhsl wehsl slewh lsewh selwh eslwh leswh elswh slweh lsweh swleh wsleh lwseh wlseh sewlh eswlh swelh wselh ewslh weslh lewsh elwsh lwesh wlesh ewlsh welsh hlews lhews helws ehlws lehws elhws hlwes lhwes hwles whles lwhes wlhes hewls ehwls hwels whels ewhls wehls lewhs elwhs lwehs wlehs ewlhs welhs
Note: these 'words' (valid or invalid) are all the permutations of the word shlew. These words are obtained by scrambling the letters in shlew.