ndhsa dnhsa nhdsa hndsa dhnsa hdnsa ndsha dnsha nsdha sndha dsnha sdnha nhsda hnsda nshda snhda hsnda shnda dhsna hdsna dshna sdhna hsdna shdna ndhas dnhas nhdas hndas dhnas hdnas ndahs dnahs nadhs andhs danhs adnhs nhads hnads nahds anhds hands ahnds dhans hdans dahns adhns hadns ahdns ndsah dnsah nsdah sndah dsnah sdnah ndash dnash nadsh andsh dansh adnsh nsadh snadh nasdh ansdh sandh asndh dsanh sdanh dasnh adsnh sadnh asdnh nhsad hnsad nshad snhad hsnad shnad nhasd hnasd nahsd anhsd hansd ahnsd nsahd snahd nashd anshd sanhd asnhd hsand shand hasnd ahsnd sahnd ashnd dhsan hdsan dshan sdhan hsdan shdan dhasn hdasn dahsn adhsn hadsn ahdsn dsahn sdahn dashn adshn sadhn asdhn hsadn shadn hasdn ahsdn sahdn ashdn
Note: these 'words' (valid or invalid) are all the permutations of the word ndhsa. These words are obtained by scrambling the letters in ndhsa.