1♦ - 2♣ -  2♦ -

pass =    preemptive

2♥/♠   =    5+♣4♥/♠, GF

2NT  =    5+♣ GF or balanced 14-16, lack of ST in at least one M or very strong    ➤    puppett to 3♣  ➲  

3♣    =    5+ card ♣, invitational

3♦     =    4+ card ♦, invitational

3NT  =    natural, 17-19

other =    GF, natural

back to 1♦ -