Shows the high end of the weak response to 1♣
This is showing no fit for the bid major < 3 cards
2♦ - Asks partner to bid major with a doubleton or bid the other major if singleton or void (16-17 HCP)
- Doesn't say anything about the other major
- Game is unlikely but opener might just be looking for more info on the distribution
- Will have to jump to game after this bid
- Can quit at 2NT or scramble for minor
Rebid Major - Shows 6+ hearts probably lower end of the range (16-17 HCP)
2♠ over 1♥ bid - Reverse (18+ HCP)
- 5+♥ and 4♠
- Lebonsohl isn't necessary because they already showed 6-7 points
- Partner likely doesn't have a fit in either suit if hearts was the first bid so just point showing and distribution although could have 6 hearts
2NT - Game Force Waiting (18+ HCP)
- Avoid going to the 3rd level but signal game force
- Can be quite a few distributions
- Partner should show any 6+ card suit with slam possibility or sign off in 3NT
3♣ - 6+ ♣ with 4 of the Major
3♦ - 6+ ♦ with 4 of the Major
3M - 7+ of the Major (16-17 HCP)
- sets the suit but not enough for game unless partner has something interesting
4M - 7+ Major no interest in slam but enough for Game