C1111233133313231133133313331333133313231323331333133313112232111   >>    C111123313331323113313331333133313331323132333133313331311223211   <<    C1111233133313231133133313331333133313231323331333133313112232113   >>      C1111233133313231133133313331333133313231323331333133313112232112   >>