C111123313121111121111331333133313331333133313331333133313331311212313111   >>    C11112331312111112111133133313331333133313331333133313331333131121231311   <<    C111123313121111121111331333133313331333133313331333133313331311212313113   >>      C111123313121111121111331333133313331333133313331333133313331311212313112   >>