eucer uecer ecuer ceuer uceer cueer euecr ueecr eeucr eeucr ueecr euecr eceur ceeur eecur eecur ceeur eceur uceer cueer uecer eucer ceuer ecuer eucre uecre ecure ceure ucere cuere eurce uerce eruce reuce urece ruece ecrue cerue ercue recue creue rceue ucree curee urcee rucee cruee rcuee euerc ueerc eeurc eeurc ueerc euerc eurec uerec eruec reuec ureec rueec eeruc eeruc ereuc reeuc ereuc reeuc uerec eurec ureec rueec eruec reuec eceru ceeru eecru eecru ceeru eceru ecreu cereu erceu receu creeu rceeu eercu eercu erecu reecu erecu reecu cereu ecreu creeu rceeu erceu receu ucere cuere uecre eucre ceure ecure ucree curee urcee rucee cruee rcuee uerce eurce urece ruece eruce reuce cerue ecrue creue rceue ercue recue
Note: these 'words' (valid or invalid) are all the permutations of the word eucer. These words are obtained by scrambling the letters in eucer.