C111123313121111121111331333133313331333131233133313232223312131   >>    C11112331312111112111133133313331333133313123313331323222331213   <<    C111123313121111121111331333133313331333131233133313232223312133   >>      C111123313121111121111331333133313331333131233133313232223312132   >>