C1111233133313231133133313331333133311221123121111121111121111132322223311   >>    C111123313331323113313331333133313331122112312111112111112111113232222331   <<    C1111233133313231133133313331333133311221123121111121111121111132322223313   >>      C1111233133313231133133313331333133311221123121111121111121111132322223312   >>