C1111233133313231133133313331333133313231323331333133313112211231332321   >>    C111123313331323113313331333133313331323132333133313331311221123133232   <<    C1111233133313231133133313331333133313231323331333133313112211231332323   >>      C1111233133313231133133313331333133313231323331333133313112211231332322   >>