chrco hcrco crhco rchco hrcco rhcco chcro hccro cchro cchro hccro chcro crcho rccho ccrho ccrho rccho crcho hrcco rhcco hcrco chrco rchco crhco chroc hcroc crhoc rchoc hrcoc rhcoc chorc hcorc cohrc ochrc hocrc ohcrc crohc rcohc corhc ocrhc rochc orchc hrocc rhocc horcc ohrcc rohcc orhcc chcor hccor cchor cchor hccor chcor chocr hcocr cohcr ochcr hoccr ohccr ccohr ccohr cochr occhr cochr occhr hcocr chocr hoccr ohccr cohcr ochcr crcoh rccoh ccroh ccroh rccoh crcoh croch rcoch corch ocrch rocch orcch ccorh ccorh cocrh occrh cocrh occrh rcoch croch rocch orcch corch ocrch hrcoc rhcoc hcroc chroc rchoc crhoc hrocc rhocc horcc ohrcc rohcc orhcc hcorc chorc hocrc ohcrc cohrc ochrc rcohc crohc rochc orchc corhc ocrhc
Note: these 'words' (valid or invalid) are all the permutations of the word chrco. These words are obtained by scrambling the letters in chrco.