C1111233133313231133133313231333133313113313113313232211313231322331   >>    C111123313331323113313331323133313331311331311331323221131323132233   <<    C1111233133313231133133313231333133313113313113313232211313231322333   >>      C1111233133313231133133313231333133313113313113313232211313231322332   >>