C1111233133313231133133313331333133313231232313331333133311213121   >>    C111123313331323113313331333133313331323123231333133313331121312   <<    C1111233133313231133133313331333133313231232313331333133311213123   >>      C1111233133313231133133313331333133313231232313331333133311213122   >>