C1111233133313231133133313331333133311221123121111331311331313113211331   >>    C111123313331323113313331333133313331122112312111133131133131311321133   <<    C1111233133313231133133313331333133311221123121111331311331313113211333   >>      C1111233133313231133133313331333133311221123121111331311331313113211332   >>