coark ocark caork acork oacrk aocrk corak ocrak croak rcoak orcak rocak carok acrok craok rcaok arcok racok oarck aorck orack roack arock raock coakr ocakr caokr acokr oackr aockr cokar ockar ckoar kcoar okcar kocar cakor ackor ckaor kcaor akcor kacor oakcr aokcr okacr koacr akocr kaocr corka ocrka croka rcoka orcka rocka cokra ockra ckora kcora okcra kocra crkoa rckoa ckroa kcroa rkcoa krcoa orkca rokca okrca korca rkoca kroca carko acrko crako rcako arcko racko cakro ackro ckaro kcaro akcro kacro crkao rckao ckrao kcrao rkcao krcao arkco rakco akrco karco rkaco kraco oarkc aorkc orakc roakc arokc raokc oakrc aokrc okarc koarc akorc kaorc orkac rokac okrac korac rkoac kroac arkoc rakoc akroc karoc rkaoc kraoc
Note: these 'words' (valid or invalid) are all the permutations of the word coark. These words are obtained by scrambling the letters in coark.