C312312111133131121333133313113313331333133313331333133112111111223311   >>    C31231211113313112133313331311331333133313331333133313311211111122331   <<    C312312111133131121333133313113313331333133313331333133112111111223313   >>      C312312111133131121333133313113313331333133313331333133112111111223312   >>