C1111233133313231133133313331333133313231312111133133313113311212331   >>    C111123313331323113313331333133313331323131211113313331311331121233   <<    C1111233133313231133133313331333133313231312111133133313113311212333   >>      C1111233133313231133133313331333133313231312111133133313113311212332   >>