C111112111133131121133133313331323133313221211111333133313223313331323123311   >>    C11111211113313112113313331333132313331322121111133313331322331333132312331   <<    C111112111133131121133133313331323133313221211111333133313223313331323123313   >>      C111112111133131121133133313331323133313221211111333133313223313331323123312   >>