hulls uhlls hluls lhuls ulhls luhls hulls uhlls hluls lhuls ulhls luhls hllus lhlus hllus lhlus llhus llhus ullhs lulhs ullhs lulhs lluhs lluhs hulsl uhlsl hlusl lhusl ulhsl luhsl husll uhsll hsull shull ushll suhll hlsul lhsul hslul shlul lshul slhul ulshl lushl uslhl sulhl lsuhl sluhl hulsl uhlsl hlusl lhusl ulhsl luhsl husll uhsll hsull shull ushll suhll hlsul lhsul hslul shlul lshul slhul ulshl lushl uslhl sulhl lsuhl sluhl hllsu lhlsu hllsu lhlsu llhsu llhsu hlslu lhslu hsllu shllu lshlu slhlu hlslu lhslu hsllu shllu lshlu slhlu llshu llshu lslhu sllhu lslhu sllhu ullsh lulsh ullsh lulsh llush llush ulslh luslh usllh sullh lsulh slulh ulslh luslh usllh sullh lsulh slulh llsuh llsuh lsluh slluh lsluh slluh
Note: these 'words' (valid or invalid) are all the permutations of the word hulls. These words are obtained by scrambling the letters in hulls.