ccunm ccunm cucnm uccnm cucnm uccnm ccnum ccnum cncum nccum cncum nccum cuncm ucncm cnucm ncucm unccm nuccm cuncm ucncm cnucm ncucm unccm nuccm ccumn ccumn cucmn uccmn cucmn uccmn ccmun ccmun cmcun mccun cmcun mccun cumcn ucmcn cmucn mcucn umccn muccn cumcn ucmcn cmucn mcucn umccn muccn ccnmu ccnmu cncmu nccmu cncmu nccmu ccmnu ccmnu cmcnu mccnu cmcnu mccnu cnmcu ncmcu cmncu mcncu nmccu mnccu cnmcu ncmcu cmncu mcncu nmccu mnccu cunmc ucnmc cnumc ncumc uncmc nucmc cumnc ucmnc cmunc mcunc umcnc mucnc cnmuc ncmuc cmnuc mcnuc nmcuc mncuc unmcc numcc umncc muncc nmucc mnucc cunmc ucnmc cnumc ncumc uncmc nucmc cumnc ucmnc cmunc mcunc umcnc mucnc cnmuc ncmuc cmnuc mcnuc nmcuc mncuc unmcc numcc umncc muncc nmucc mnucc
Note: these 'words' (valid or invalid) are all the permutations of the word ccunm. These words are obtained by scrambling the letters in ccunm.