C11112331312111112111133132313331333133313232213331311211323323231   >>    C1111233131211111211113313231333133313331323221333131121132332323   <<    C11112331312111112111133132313331333133313232213331311211323323233   >>      C11112331312111112111133132313331333133313232213331311211323323232   >>