¨ä¹ê©O«×«Y»´ä°¨°Q½×°Ï¡A¥i¯àÃD¥ØÀ³¸Ó§ï¬°¡uÂI¸Ñ·|ÉNªí¦CÁÉ¡H¡T¡v
Ú»°¨¡A¤@¸ô¥H¾¤³£·|¦³g1¡Ag2¡Ag3¡A©Ò¿×group pattern(group pattern¥i¿×»´ä¿WÉNªºªF¦è¡T)¡A¦ýÂI¸Ñ0«Y¤TÓgroup¤§«á¡An¾ãÓlisted race0¬J³¥¥X¾¤¡AËÝ°³Â·ÐÃø°O¡A¦Óø«Y´¶´¶³q³qËݦ³group 4©O¡H´N©O¼Ë³¥¡A§Ú¹Á¸Õ¤Wºôݯ¦³Ãö0¬J¸ê®Æ¡A¦ý¼È®É¦ü¥GÉNÉAºô¶¥i¥H¸Ñ¨M°Ï°Ï0¬J°ÝÃD¡C
¦pªG¦U¦ìªB¤Í¦³¿³½ì¡A¥i¥H¦P§Ú¤@»ô¶Ì0¤U¡A¤@»ô´M®Ú¨s©³¡C©ÎªÌ¥»¨¹ïgroup pattern¦³»{ÃÑ¡A0«Y©O¤è±µoªí0¤U°ª¨£¡C
¥H¤U¨â±ølink«Y´yz^¿D¨â¦a0¬Jgroup pattern0¬J®Æ¡A¤¶¥G¦³¥Î»PÉN¥Î¤§¶¡¡G
http://answers.yahoo.com/question/index?qid=20061208040319AAs6rdo
http://www.harness.org.au/ahrc/feature/gr_glines.htm