adunc daunc audnc uadnc duanc udanc adnuc danuc anduc naduc dnauc ndauc aundc uandc anudc naudc unadc nuadc dunac udnac dnuac nduac undac nudac aducn daucn audcn uadcn duacn udacn adcun dacun acdun cadun dcaun cdaun aucdn uacdn acudn caudn ucadn cuadn ducan udcan dcuan cduan ucdan cudan adncu dancu andcu nadcu dnacu ndacu adcnu dacnu acdnu cadnu dcanu cdanu ancdu nacdu acndu candu ncadu cnadu dncau ndcau dcnau cdnau ncdau cndau auncd uancd anucd naucd unacd nuacd aucnd uacnd acund caund ucand cuand ancud nacud acnud canud ncaud cnaud uncad nucad ucnad cunad ncuad cnuad dunca udnca dnuca nduca undca nudca ducna udcna dcuna cduna ucdna cudna dncua ndcua dcnua cdnua ncdua cndua uncda nucda ucnda cunda ncuda cnuda
Note: these 'words' (valid or invalid) are all the permutations of the word adunc. These words are obtained by scrambling the letters in adunc.