C1111233133313231133133313331333133313231323331333133313221333131231211   >>    C111123313331323113313331333133313331323132333133313331322133313123121   <<    C1111233133313231133133313331333133313231323331333133313221333131231213   >>      C1111233133313231133133313331333133313231323331333133313221333131231212   >>