C312312111133131121333133313113313331333133313331333133313331333133313222312311   >>    C31231211113313112133313331311331333133313331333133313331333133313331322231231   <<    C312312111133131121333133313113313331333133313331333133313331333133313222312313   >>      C312312111133131121333133313113313331333133313331333133313331333133313222312312   >>