C1111233133313231133133313331333133313231323331333133313112121221   >>    C111123313331323113313331333133313331323132333133313331311212122   <<    C1111233133313231133133313331333133313231323331333133313112121223   >>      C1111233133313231133133313331333133313231323331333133313112121222   >>