C2221333133313331311233132313331333133313131133133313232233312112121   >>    C222133313331333131123313231333133313331313113313331323223331211212   <<    C2221333133313331311233132313331333133313131133133313232233312112123   >>      C2221333133313331311233132313331333133313131133133313232233312112122   >>