ceroc ecroc creoc rceoc ercoc recoc ceorc ecorc coerc ocerc eocrc oecrc croec rcoec corec ocrec rocec orcec erocc reocc eorcc oercc roecc orecc cerco ecrco creco rceco ercco recco cecro eccro ccero ccero eccro cecro crceo rcceo ccreo ccreo rcceo crceo ercco recco ecrco cerco rceco creco ceocr ecocr coecr ocecr eoccr oeccr cecor eccor cceor cceor eccor cecor cocer occer ccoer ccoer occer cocer eoccr oeccr ecocr ceocr ocecr coecr croce rcoce corce ocrce rocce orcce crcoe rccoe ccroe ccroe rccoe crcoe cocre occre ccore ccore occre cocre rocce orcce rcoce croce ocrce corce erocc reocc eorcc oercc roecc orecc ercoc recoc ecroc ceroc rceoc creoc eocrc oecrc ecorc ceorc ocerc coerc rocec orcec rcoec croec ocrec corec
Note: these 'words' (valid or invalid) are all the permutations of the word ceroc. These words are obtained by scrambling the letters in ceroc.