C111112111133131121133133313331333133313331323221211111122112311   >>    C11111211113313112113313331333133313331333132322121111112211231   <<    C111112111133131121133133313331333133313331323221211111122112313   >>      C111112111133131121133133313331333133313331323221211111122112312   >>