Meaning

1C

Usually 12-16 points, possibly 21-22 or 25-26 points
4=3=3=3 or 4=4=3=2 distribution

1D/H/S

Natural and forcing, showing 4+ cards, Canape treatment

1N

17-20 points, balanced

2C/D

12-16 points with 4=4=4=1,
17-20 points and  5=4=4=0,

2H/S

5+ card suit and 4+ Clubs

2N

23-24 points with balanced distribution

Response

Meaning

1D

Artificial negative, 0-9 points.  Opener's rebids:

With 12-16 points, bid a 4-card major, 1H with 4-4, otherwise 1N

With 21-22 points, bid 2N

With 25-26 points, bid 3N

1H/S

Reasonable suit and at least 9 points.  Opener's rebids:

With 12-16 points, bid 1S, 1N, or raise to the 2 level with 12-14 points.
               With 15-16 points, bid 2 of a new suit (except Clubs)

With 21-22 points, bid 2NT

2C/D

Reasonable suit and at least 9 points.  Opener's rebids

With 12-14 points bid 2 level suit, 2N with 15-16 points

With 21-22 points, jump to 2N

1N

Balanced hand, 12-15 points.  Opener's rebids:

With 12-16 points, bid 2M with 12-13 points. With no major, bid 2D.

With 14-16 points, jump to 2N

Gladiator, 2C forces 2D, 2D is Stayman

2N

Balanced hand, 16+ points.  Opener rebids:

3D with 12-13 points

3H with 14 points

3S with 15 points

3N with 16 points

3C is Baron,  3D is Stayman

2H/S

Good suit (2 of 3 top honors) with 12+ points.  Opener's rebids:

1st step = 12-13 points, no support

2nd step = 12-13 points, support

3rd step = 14-16 points, no support

4th step = 14-16 points, support

1C

17-20 points artificial or a hand with at least 10 playing tricks.
Responder bids are:

1D = less than 8 points

1N = 8-13 points

Opener's follow-up rebids vary by partnership (see Precision, Blue Club)

1H/S

12+ points natural, with a 5+ card suit and unbalanced hand

2C

12-16 points artificial, 4-4-4-1 or 5-4-4-0 hand without 5 card major

2D

17-20 points artificial, 4-4-4-1 or 5-4-4-0 hand without 5 card major

2H/S

12-16 points natural, with a 5+ card suit and 4+ Clubs

3C+

Preemptive, natural