2 NT Opening:

20-21 HCP, balanced, can have 5 card minor

3§= Stayman

3¨/3©/4¨/©= transfers

3ª= minor(s), slam interest

    3NT=automatic

        4§/¨=5+ cards

        4©/ª= shortness, 5-5 minors

3NT= sign off

4§ = Gerber

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