nonce onnce nnoce nnoce onnce nonce nocne oncne ncone cnone ocnne conne nncoe nncoe ncnoe cnnoe ncnoe cnnoe oncne nocne ocnne conne ncone cnone nonec onnec nnoec nnoec onnec nonec noenc onenc neonc enonc oennc eonnc nneoc nneoc nenoc ennoc nenoc ennoc onenc noenc oennc eonnc neonc enonc nocen oncen ncoen cnoen ocnen conen noecn onecn neocn enocn oencn eoncn nceon cneon necon encon cenon ecnon ocenn coenn oecnn eocnn ceonn econn nnceo nnceo ncneo cnneo ncneo cnneo nneco nneco nenco ennco nenco ennco nceno cneno necno encno cenno ecnno nceno cneno necno encno cenno ecnno oncen nocen ocnen conen ncoen cnoen onecn noecn oencn eoncn neocn enocn ocenn coenn oecnn eocnn ceonn econn nceon cneon necon encon cenon ecnon
Note: these 'words' (valid or invalid) are all the permutations of the word nonce. These words are obtained by scrambling the letters in nonce.