◇ 1D!-1M; 2M

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1D!-1M; 2M

if M=H                                  if M=S
2S!     ask spl                         2N!     ask spl
    3H  min                                 3S  min
    3N  Max BAL, CoG                        3N  Max BAL, CoG
    4H  Max often BAL                       4S  Max often BAL
    2N! S spl                               3x! x spl
    3m! m spl
2N!/3m! S/m help inv                    3x!     x help inv
3H      good 6H, inv 3N/4H              3S      good 6S, inv 3N/4S
3S+     Max void or S/O                 3N+     Max void or S/O


# 在1D!-1M; 2M後若開叫的人是拿3張加叫
  則在答叫者叫出邀請時 開叫者應叫回3M(低限)或3N(非低限)表示不是好的4張支持