cobby ocbby cboby bcoby obcby bocby cobby ocbby cboby bcoby obcby bocby cbboy bcboy cbboy bcboy bbcoy bbcoy obbcy bobcy obbcy bobcy bbocy bbocy cobyb ocbyb cboyb bcoyb obcyb bocyb coybb ocybb cyobb ycobb oycbb yocbb cbyob bcyob cybob ycbob bycob ybcob obycb boycb oybcb yobcb byocb ybocb cobyb ocbyb cboyb bcoyb obcyb bocyb coybb ocybb cyobb ycobb oycbb yocbb cbyob bcyob cybob ycbob bycob ybcob obycb boycb oybcb yobcb byocb ybocb cbbyo bcbyo cbbyo bcbyo bbcyo bbcyo cbybo bcybo cybbo ycbbo bycbo ybcbo cbybo bcybo cybbo ycbbo bycbo ybcbo bbyco bbyco bybco ybbco bybco ybbco obbyc bobyc obbyc bobyc bboyc bboyc obybc boybc oybbc yobbc byobc ybobc obybc boybc oybbc yobbc byobc ybobc bbyoc bbyoc byboc ybboc byboc ybboc
Note: these 'words' (valid or invalid) are all the permutations of the word cobby. These words are obtained by scrambling the letters in cobby.