1♠ - 2♣ -

2♦    =    waiting (in most cases, except if very distributional or if holds 4+ card ♥)    ➲

2♥    =    5+♠4+♥, 11+    ➲

2♠    =    GF, 5+♠5♣ , 11-13    ➲

2NT  =    GF, 5+♠5♣ , 14-16    ➲

3♣    =    5+♠5♦, 11-13    ➲

3♦    =    5+♠5♦, 14-16    ➲