corbe ocrbe crobe rcobe orcbe rocbe cobre ocbre cbore bcore obcre bocre crboe rcboe cbroe bcroe rbcoe brcoe orbce robce obrce borce rboce broce coreb ocreb croeb rcoeb orceb roceb coerb ocerb ceorb ecorb oecrb eocrb creob rceob cerob ecrob recob ercob orecb roecb oercb eorcb reocb erocb cober ocber cboer bcoer obcer bocer coebr ocebr ceobr ecobr oecbr eocbr cbeor bceor cebor ecbor becor ebcor obecr boecr oebcr eobcr beocr ebocr crbeo rcbeo cbreo bcreo rbceo brceo crebo rcebo cerbo ecrbo recbo ercbo cbero bcero cebro ecbro becro ebcro rbeco breco rebco erbco berco ebrco orbec robec obrec borec rboec broec orebc roebc oerbc eorbc reobc erobc oberc boerc oebrc eobrc beorc eborc rbeoc breoc reboc erboc beroc ebroc
Note: these 'words' (valid or invalid) are all the permutations of the word corbe. These words are obtained by scrambling the letters in corbe.