C1111233133313231133133313231333133313113313113313331331121111331322123111   >>    C111123313331323113313331323133313331311331311331333133112111133132212311   <<    C1111233133313231133133313231333133313113313113313331331121111331322123113   >>      C1111233133313231133133313231333133313113313113313331331121111331322123112   >>