Quadri Livorno

2NT=14-16,2-suiter,

    5-5 in both minors

2NT-3§¨=Signoff

2NT-3©=6+©,NF

2NT-3ª=6+ª,NF

2NT-3NT=Signoff

2NT-4§¨=Positive

2NT-4§¨-4©=minimum

2NT-4§¨-4ª=MAXIMUM