C11112331312111112111133133313331333133313113233231333132321123232311   >>    C1111233131211111211113313331333133313331311323323133313232112323231   <<    C11112331312111112111133133313331333133313113233231333132321123232313   >>      C11112331312111112111133133313331333133313113233231333132321123232312   >>