东码:31,32,33,34,35,36,37,38,39,40,41,42
西码:07,08,09,10,11,12,13,14,15,16,17,18
南码:19,20,21,22,23,24,25,26,27,28,29,30
北码:01,02,03,04,05,06,43,44,45,46,47,48,49