C11112331312111112111133133313331333132323133313331323123121123121   >>    C1111233131211111211113313331333133313232313331333132312312112312   <<    C11112331312111112111133133313331333132323133313331323123121123123   >>      C11112331312111112111133133313331333132323133313331323123121123122   >>