1♣ - ??
- - 2♣ = INV 10+ HCP 4+ ♣
- - 3♣ = WEAK 4+ ♣.
- - 2♦... = FIT 5+ bid suit, 4+ ♣ sound raise to at least the next level.
1♣ - 2♣
??
- - 2N = MIN flat.
- - 3♣ = MIN with 5+♣
- - 2♦ = ART searching for stoppers.
- - 2♥/♠ = NAT 4+ bid suit
Similarly
1♦ - 2♦ -; 3♣ = ART searching for stoppers.