C312312111133131121333133313113313331333133313331333133313331333132313233213231   >>    C31231211113313112133313331311331333133313331333133313331333133313231323321323   <<    C312312111133131121333133313113313331333133313331333133313331333132313233213233   >>      C312312111133131121333133313113313331333133313331333133313331333132313233213232   >>