divan idvan dvian vdian ivdan vidan diavn idavn daivn adivn iadvn aidvn dvain vdain davin advin vadin avdin ivadn viadn iavdn aivdn vaidn avidn divna idvna dvina vdina ivdna vidna dinva idnva dniva ndiva indva nidva dvnia vdnia dnvia ndvia vndia nvdia ivnda vinda invda nivda vnida nvida dianv idanv dainv adinv iadnv aidnv dinav idnav dniav ndiav indav nidav daniv adniv dnaiv ndaiv andiv nadiv iandv aindv inadv niadv anidv naidv dvani vdani davni advni vadni avdni dvnai vdnai dnvai ndvai vndai nvdai danvi adnvi dnavi ndavi andvi nadvi vandi avndi vnadi nvadi anvdi navdi ivand viand iavnd aivnd vaind avind ivnad vinad invad nivad vniad nviad ianvd ainvd inavd niavd anivd naivd vanid avnid vnaid nvaid anvid navid
Note: these 'words' (valid or invalid) are all the permutations of the word divan. These words are obtained by scrambling the letters in divan.