hails ahils hials ihals aihls iahls halis ahlis hlais lhais alhis lahis hilas ihlas hlias lhias ilhas lihas ailhs ialhs alihs laihs ilahs liahs haisl ahisl hiasl ihasl aihsl iahsl hasil ahsil hsail shail ashil sahil hisal ihsal hsial shial ishal sihal aishl iashl asihl saihl isahl siahl halsi ahlsi hlasi lhasi alhsi lahsi hasli ahsli hsali shali ashli sahli hlsai lhsai hslai shlai lshai slhai alshi lashi aslhi salhi lsahi slahi hilsa ihlsa hlisa lhisa ilhsa lihsa hisla ihsla hsila shila ishla sihla hlsia lhsia hslia shlia lshia slhia ilsha lisha islha silha lsiha sliha ailsh ialsh alish laish ilash liash aislh iaslh asilh sailh isalh sialh alsih lasih aslih salih lsaih slaih ilsah lisah islah silah lsiah sliah
Note: these 'words' (valid or invalid) are all the permutations of the word hails. These words are obtained by scrambling the letters in hails.