C2221333133313331311233132313331333133313131133133313331323231221   >>    C222133313331333131123313231333133313331313113313331333132323122   <<    C2221333133313331311233132313331333133313131133133313331323231223   >>      C2221333133313331311233132313331333133313131133133313331323231222   >>