C11112331312111112111133133313331333132112312111111331323133313232311   >>    C1111233131211111211113313331333133313211231211111133132313331323231   <<    C11112331312111112111133133313331333132112312111111331323133313232313   >>      C11112331312111112111133133313331333132112312111111331323133313232312   >>