C1111233133313231133133313331333133311221123121111331333133313331322233122321   >>    C111123313331323113313331333133313331122112312111133133313331333132223312232   <<    C1111233133313231133133313331333133311221123121111331333133313331322233122323   >>      C1111233133313231133133313331333133311221123121111331333133313331322233122322   >>