C1111233131211111211113313331333133313232321331133132313331333231323223311   >>    C111123313121111121111331333133313331323232133113313231333133323132322331   <<    C1111233131211111211113313331333133313232321331133132313331333231323223313   >>      C1111233131211111211113313331333133313232321331133132313331333231323223312   >>