ncdoe cndoe ndcoe dncoe cdnoe dcnoe ncode cnode nocde oncde conde ocnde ndoce dnoce nodce ondce donce odnce cdone dcone codne ocdne docne odcne ncdeo cndeo ndceo dnceo cdneo dcneo ncedo cnedo necdo encdo cendo ecndo ndeco dneco nedco endco denco ednco cdeno dceno cedno ecdno decno edcno ncoed cnoed noced onced coned ocned nceod cneod necod encod cenod ecnod noecd onecd neocd enocd oencd eoncd coend ocend ceond econd oecnd eocnd ndoec dnoec nodec ondec donec odnec ndeoc dneoc nedoc endoc denoc ednoc noedc onedc neodc enodc oendc eondc doenc odenc deonc edonc oednc eodnc cdoen dcoen coden ocden docen odcen cdeon dceon cedon ecdon decon edcon coedn ocedn ceodn ecodn oecdn eocdn doecn odecn deocn edocn oedcn eodcn
Note: these 'words' (valid or invalid) are all the permutations of the word ncdoe. These words are obtained by scrambling the letters in ncdoe.