==== 2clubs opening ====

weak major 2 suiter. 3-10 HCP. may be 5-5 or 5-4/6-4 either way.

  * pas = to play in clubs
  * 3D = to play in diamonds
  * 2D asks for longer major (2H with 55). then 3C/D is natural invitational
  * 2NT is strong, forcing, ask description:
    * 3C = any minimal
      * 3D ask again
        * 3H/S = 54
        * 3N = 55
        * 4C/D = 64  
    * 3D = maximal 55
    * 3H/S = maximal 54
    * 4C/D = maximal 64
  * 4C ask transfer in longer major, 4D ask for longer major

In competition, after 2C - (DBL) - pas is to play in clubs, 2D is to play in diamonds, redouble ask for longer major.