We double

(1♦) - dbl - 

1♥/♠     =    natural, 7- HC

1NT    =    6-10, ♦ ST

2♣    =    4+ card ♣,  9-

2♦    =    4+♥,  7+

2♥    =    4+♠,  7+

2♠    =    5+ card ♣,  10+    

2NT    =    ♦ ST, denies 4 card M, 11-13

3♣    =    4+♥,4+♠, GF    ➲

3♦    =    asking for ST

3♥/♠     =    natural, preemptive, NF

3NT    =    TP

4♣    =    natural, preemptive, NF

4♦   =    5+♥,5+♠, weak

4♥/♠     =    natural, preemptive, NF

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