C1111233133313231133133313331333133313231323331333133313113121111112121   >>    C111123313331323113313331333133313331323132333133313331311312111111212   <<    C1111233133313231133133313331333133313231323331333133313113121111112123   >>      C1111233133313231133133313331333133313231323331333133313113121111112122   >>