C11112331312111112111133133313331333132323133313331333133313112121123121   >>    C1111233131211111211113313331333133313232313331333133313331311212112312   <<    C11112331312111112111133133313331333132323133313331333133313112121123123   >>      C11112331312111112111133133313331333132323133313331333133313112121123122   >>