C11112331312111112111133133313121111331323132333132233132313232311   >>    C1111233131211111211113313331312111133132313233313223313231323231   <<    C11112331312111112111133133313121111331323132333132233132313232313   >>      C11112331312111112111133133313121111331323132333132233132313232312   >>