C111123313121111121111331333133313331323231333133313132313232112121   >>    C11112331312111112111133133313331333132323133313331313231323211212   <<    C111123313121111121111331333133313331323231333133313132313232112123   >>      C111123313121111121111331333133313331323231333133313132313232112122   >>