C2221333133313331311233132313331333133313131133133313233313222211   >>    C222133313331333131123313231333133313331313113313331323331322221   <<    C2221333133313331311233132313331333133313131133133313233313222213   >>      C2221333133313331311233132313331333133313131133133313233313222212   >>