unais nuais uanis aunis nauis anuis unias nuias uinas iunas niuas inuas uains auins uians iuans aiuns iauns naius anius niaus inaus ainus ianus unasi nuasi uansi aunsi nausi anusi unsai nusai usnai sunai nsuai snuai uasni ausni usani suani asuni sauni nasui ansui nsaui snaui asnui sanui unisa nuisa uinsa iunsa niusa inusa unsia nusia usnia sunia nsuia snuia uisna iusna usina suina isuna siuna nisua insua nsiua sniua isnua sinua uaisn auisn uiasn iuasn aiusn iausn uasin ausin usain suain asuin sauin uisan iusan usian suian isuan siuan aisun iasun asiun saiun isaun siaun naisu anisu niasu inasu ainsu iansu nasiu ansiu nsaiu snaiu asniu saniu nisau insau nsiau sniau isnau sinau aisnu iasnu asinu sainu isanu sianu
Note: these 'words' (valid or invalid) are all the permutations of the word unais. These words are obtained by scrambling the letters in unais.