◇ 1M-3/4 opening (2-way Drury)

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3/4家
1M-2m   Drury
   2M   3-7
   2N   a m inv (3C=C不去  3D=C去D不去  else=受邀  P/C)
   2S+  fit showing

1M-2C; 2D       ask range
       2M       weak    (11-)