C2221333133313331311233132313331333133313131133133313233213311221   >>    C222133313331333131123313231333133313331313113313331323321331122   <<    C2221333133313331311233132313331333133313131133133313233213311223   >>      C2221333133313331311233132313331333133313131133133313233213311222   >>