C111123313331323113313331333133313331323112133313331333111112311   >>    C11112331333132311331333133313331333132311213331333133311111231   <<    C111123313331323113313331333133313331323112133313331333111112313   >>      C111123313331323113313331333133313331323112133313331333111112312   >>