swecu wsecu sewcu eswcu wescu ewscu swceu wsceu scweu csweu wcseu cwseu secwu escwu scewu csewu ecswu ceswu wecsu ewcsu wcesu cwesu ecwsu cewsu sweuc wseuc sewuc eswuc wesuc ewsuc swuec wsuec suwec uswec wusec uwsec seuwc esuwc suewc usewc euswc ueswc weusc ewusc wuesc uwesc euwsc uewsc swcue wscue scwue cswue wcsue cwsue swuce wsuce suwce uswce wusce uwsce scuwe csuwe sucwe uscwe cuswe ucswe wcuse cwuse wucse uwcse cuwse ucwse secuw escuw sceuw cseuw ecsuw cesuw seucw esucw suecw usecw euscw uescw scuew csuew sucew uscew cusew ucsew ecusw ceusw eucsw uecsw cuesw ucesw wecus ewcus wceus cweus ecwus cewus weucs ewucs wuecs uwecs euwcs uewcs wcues cwues wuces uwces cuwes ucwes ecuws ceuws eucws uecws cuews ucews
Note: these 'words' (valid or invalid) are all the permutations of the word swecu. These words are obtained by scrambling the letters in swecu.