C1111233133313231133133313331333133311221123121111113313231323311231   >>    C111123313331323113313331333133313331122112312111111331323132331123   <<    C1111233133313231133133313331333133311221123121111113313231323311233   >>      C1111233133313231133133313331333133311221123121111113313231323311232   >>