C111112111133131121133133313331333133313331323133313331333133313231323221312311   >>    C11111211113313112113313331333133313331333132313331333133313331323132322131231   <<    C111112111133131121133133313331333133313331323133313331333133313231323221312313   >>      C111112111133131121133133313331333133313331323133313331333133313231323221312312   >>