C312312111133131121333133313113313331333133313331333133112323311321   >>    C31231211113313112133313331311331333133313331333133313311232331132   <<    C312312111133131121333133313113313331333133313331333133112323311323   >>      C312312111133131121333133313113313331333133313331333133112323311322   >>