Bocchi-Duboin

2ª-P-P-DBL-P-2NT=#ASK

2ª-DBL-Pass-2NT=#ASK

2ª-DBL=Takeout

3§=Trans -> ¨

3¨=Trans -> ©

3©=Trans -> §

3ª=Trans -> 3NT

3NT=3+©,Stoppers

4©=Signoff