C312312111133131121333133313113313331333133313331333133313331333133312331323121   >>    C31231211113313112133313331311331333133313331333133313331333133313331233132312   <<    C312312111133131121333133313113313331333133313331333133313331333133312331323123   >>      C312312111133131121333133313113313331333133313331333133313331333133312331323122   >>