flush lfush fulsh uflsh lufsh ulfsh flsuh lfsuh fsluh sfluh lsfuh slfuh fuslh ufslh fsulh sfulh usflh suflh lusfh ulsfh lsufh slufh uslfh sulfh fluhs lfuhs fulhs uflhs lufhs ulfhs flhus lfhus fhlus hflus lhfus hlfus fuhls ufhls fhuls hfuls uhfls hufls luhfs ulhfs lhufs hlufs uhlfs hulfs flshu lfshu fslhu sflhu lsfhu slfhu flhsu lfhsu fhlsu hflsu lhfsu hlfsu fshlu sfhlu fhslu hfslu shflu hsflu lshfu slhfu lhsfu hlsfu shlfu hslfu fushl ufshl fsuhl sfuhl usfhl sufhl fuhsl ufhsl fhusl hfusl uhfsl hufsl fshul sfhul fhsul hfsul shful hsful ushfl suhfl uhsfl husfl shufl hsufl lushf ulshf lsuhf sluhf uslhf sulhf luhsf ulhsf lhusf hlusf uhlsf hulsf lshuf slhuf lhsuf hlsuf shluf hsluf ushlf suhlf uhslf huslf shulf hsulf
Note: these 'words' (valid or invalid) are all the permutations of the word flush. These words are obtained by scrambling the letters in flush.