C3123121111331311213331333131133133313331333133313311211111223311111   >>    C312312111133131121333133313113313331333133313331331121111122331111   <<    C3123121111331311213331333131133133313331333133313311211111223311113   >>      C3123121111331311213331333131133133313331333133313311211111223311112   >>