Pass
0-5 pts
1D
4+ diamonds and 6+ points. Forcing.
1H
4+ hearts and 6+ points. Forcing. *4H/4S -> bid 1H
1S
4+ spades and 6+ points. Forcing. *5H-5S -> bid 1S
1NT
6-9 points, balanced. Denies a 4-card major, and tends to deny 4 clubs. Non-forcing.
2C
A single raise shows 6-9 points and at least 4-card support. Denies a 4-card major. Non-forcing.
2D/H/S
A Strong Jump Shift, showing a 5+ card suit and 17-19 points. Forcing to game.
2NT
2NT shows a balanced 13-15 HCP. Forcing to game. Could be 10-12 HCP.
3C
A limit raise, showing 4+ clubs and 10-12 points. Denies a 4-card major. Non-forcing.
3NT
balanced 15-17 HCP or 13-15 HCP
4NT
Blackwood -> asks for aces