C312312111112111113121333133313331333133313331333211232313233313331122331121   >>    C31231211111211111312133313331333133313331333133321123231323331333112233112   <<    C312312111112111113121333133313331333133313331333211232313233313331122331123   >>      C312312111112111113121333133313331333133313331333211232313233313331122331122   >>