C1111233133313231133133313331333133311221123121111331333233122311   >>    C111123313331323113313331333133313331122112312111133133323312231   <<    C1111233133313231133133313331333133311221123121111331333233122313   >>      C1111233133313231133133313331333133311221123121111331333233122312   >>