C1111121111331311211331333133313331333133313231333133313331312111133223323311   >>    C111112111133131121133133313331333133313331323133313331333131211113322332331   <<    C1111121111331311211331333133313331333133313231333133313331312111133223323313   >>      C1111121111331311211331333133313331333133313231333133313331312111133223323312   >>