C3123121111331311213331333131133133313331333133313331313232232321   >>    C312312111133131121333133313113313331333133313331333131323223232   <<    C3123121111331311213331333131133133313331333133313331313232232323   >>      C3123121111331311213331333131133133313331333133313331313232232322   >>