C312312111112111113121333133313331333133313331333211232313233313331333132333111   >>    C31231211111211111312133313331333133313331333133321123231323331333133313233311   <<    C312312111112111113121333133313331333133313331333211232313233313331333132333113   >>      C312312111112111113121333133313331333133313331333211232313233313331333132333112   >>