C1111233133313231133133313331333132313331323113121111331312111112233311   >>    C111123313331323113313331333133313231333132311312111133131211111223331   <<    C1111233133313231133133313331333132313331323113121111331312111112233313   >>      C1111233133313231133133313331333132313331323113121111331312111112233312   >>