ladhs aldhs ldahs dlahs adlhs dalhs lahds alhds lhads hlads ahlds halds ldhas dlhas lhdas hldas dhlas hdlas adhls dahls ahdls hadls dhals hdals ladsh aldsh ldash dlash adlsh dalsh lasdh alsdh lsadh sladh asldh saldh ldsah dlsah lsdah sldah dslah sdlah adslh daslh asdlh sadlh dsalh sdalh lahsd alhsd lhasd hlasd ahlsd halsd lashd alshd lsahd slahd aslhd salhd lhsad hlsad lshad slhad hslad shlad ahsld hasld ashld sahld hsald shald ldhsa dlhsa lhdsa hldsa dhlsa hdlsa ldsha dlsha lsdha sldha dslha sdlha lhsda hlsda lshda slhda hslda shlda dhsla hdsla dshla sdhla hsdla shdla adhsl dahsl ahdsl hadsl dhasl hdasl adshl dashl asdhl sadhl dsahl sdahl ahsdl hasdl ashdl sahdl hsadl shadl dhsal hdsal dshal sdhal hsdal shdal
Note: these 'words' (valid or invalid) are all the permutations of the word ladhs. These words are obtained by scrambling the letters in ladhs.