C312312111133131121333133313113313331333133313331333133313331333133313121213231   >>    C31231211113313112133313331311331333133313331333133313331333133313331312121323   <<    C312312111133131121333133313113313331333133313331333133313331333133313121213233   >>      C312312111133131121333133313113313331333133313331333133313331333133313121213232   >>