C1111233133313231133133313331333132313331323113121111331311331323121123211111   >>    C111123313331323113313331333133313231333132311312111133131133132312112321111   <<    C1111233133313231133133313331333132313331323113121111331311331323121123211113   >>      C1111233133313231133133313331333132313331323113121111331311331323121123211112   >>