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