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.