cooer ocoer cooer ocoer oocer oocer coeor oceor ceoor ecoor oecor eocor coeor oceor ceoor ecoor oecor eocor ooecr ooecr oeocr eoocr oeocr eoocr coore ocore coore ocore oocre oocre coroe ocroe crooe rcooe orcoe rocoe coroe ocroe crooe rcooe orcoe rocoe oorce oorce oroce rooce oroce rooce coero ocero ceoro ecoro oecro eocro coreo ocreo croeo rcoeo orceo roceo ceroo ecroo creoo rceoo ercoo recoo oerco eorco oreco roeco eroco reoco coero ocero ceoro ecoro oecro eocro coreo ocreo croeo rcoeo orceo roceo ceroo ecroo creoo rceoo ercoo recoo oerco eorco oreco roeco eroco reoco ooerc ooerc oeorc eoorc oeorc eoorc oorec oorec oroec rooec oroec rooec oeroc eoroc oreoc roeoc erooc reooc oeroc eoroc oreoc roeoc erooc reooc
Note: these 'words' (valid or invalid) are all the permutations of the word cooer. These words are obtained by scrambling the letters in cooer.