1st/2nd                           3rd                   4th
1C*   15+ HCP, BAL or 16+ HCP, unbal           same as 1st/2nd
1D*   10-15 HCP, 0+D                  0-15 HCP, 0+D         same as 1st/2nd
1H    10-15 HCP, 5+H                  0-15 HCP, 4+H         12-15 HCP, 4+H
1S    10-15 HCP, 5+S                  0-15 HCP, 4+S         12-15 HCP, 4+S
1N*   (11)12-14 HCP, BAL                     11-15 HCP, semi-bal

2C*   10-15 HCP, 4414/4315/3415/4405  PRE (wild)            16-18 HCP, 6+C
2D*   3-10 HCP, a 6+M                 PRE (wild)            16-18 HCP, 6+D
2H*   3-10 HCP, H+S 44+               PRE (wild)            16-18 HCP, 6+H
2S*   3H PRE                          PRE (wild)            16-18 HCP, 6+S
2N    22-23 HCP, BAL                  22-23 HCP, BAL        22-23 HCP, BAL

3m    3m PRE                     3x   亂三                  一門邀請
3H    3S PRE                     3N   gambling 3N           to play
3S    gambling 3N
3N    weak 4m opening

4m*   SF transfer to 4M, 8.5 tricks
4M+   PRE


信號:小歡迎  張數反  墊牌O/E
引牌:(無王)01 4th       (王牌)02 35
     一堆小牌時奇數張攻第二  偶數張攻最大
顯應轉攻時跟花色選擇信號
拔A時若該門花色有支持跟張數  其餘跟表態


Rubens使用在開1M被蓋叫, 我方蓋叫1M, 竄叫賭倍後及開1C/D被蓋叫