C1111233133313231133133313231333133313113313113313331333132321321321111   >>    C111123313331323113313331323133313331311331311331333133313232132132111   <<    C1111233133313231133133313231333133313113313113313331333132321321321113   >>      C1111233133313231133133313231333133313113313113313331333132321321321112   >>