1♦ - 1♠ -

1NT  =    4+♣, undefined, does not deny 3 card, F1    ➲

2♣    =    6+♦    ➲

2♦    =    5+♦, 3♠, 11-13, natural continuation

2♥    =    5+♦4♥, reverse

2♠    =    4♠, 11-13

2NT =    natural

3♣   =    GF, 5+♦5♣, denies 3 card ♠ 

3♠    =    4♠, 14-16, some singleton

3NT =    TP

back to 1♦ -