mdecu dmecu medcu emdcu demcu edmcu mdceu dmceu mcdeu cmdeu dcmeu cdmeu mecdu emcdu mcedu cmedu ecmdu cemdu decmu edcmu dcemu cdemu ecdmu cedmu mdeuc dmeuc meduc emduc demuc edmuc mduec dmuec mudec umdec dumec udmec meudc emudc muedc umedc eumdc uemdc deumc edumc duemc udemc eudmc uedmc mdcue dmcue mcdue cmdue dcmue cdmue mduce dmuce mudce umdce dumce udmce mcude cmude mucde umcde cumde ucmde dcume cdume ducme udcme cudme ucdme mecud emcud mceud cmeud ecmud cemud meucd emucd muecd umecd eumcd uemcd mcued cmued muced umced cumed ucmed ecumd ceumd eucmd uecmd cuemd ucemd decum edcum dceum cdeum ecdum cedum deucm educm duecm udecm eudcm uedcm dcuem cduem ducem udcem cudem ucdem ecudm ceudm eucdm uecdm cuedm ucedm
Note: these 'words' (valid or invalid) are all the permutations of the word mdecu. These words are obtained by scrambling the letters in mdecu.