1NT (P) 2♣ (X)

XX = business (with 4 trump , with 5 trump pass and hope for xx)

2♦ = no major with ♣ stopper

2♥ = ♥ + ♣ stopper

2♠ = ♠ + ♣ stopper

Pass = no ♣ stopper

1NT (P) 2♣ (X) P (P) XX (P)

2♦ = no major, no stopper

2♥ = ♠

2♠ = ♥

2NT = both majors

3♣ = slam try in ♥

3♦ = retransfer

3♦ = slam try in ♠

3♥ = retransfer

1NT (P) 2♣ (X) P (P)

3♥ = reverse smolen

3♠ = reverse smolen