Crowhurst

12-16 pts wide range 1N rebid: For showing 12-16 pts and a 5 card major or a 5-4-2-2
(NOT 5-4 in Ms] or 3 card support for partner. May be 5-4-3-1 BUT ONLY if singn is in pard's suit and your values are in your short suits or you can't reverse. 

1B - 1G 
1N - 2C : 9+ pts Crowhurst Inquiry 
2D : 12-14 pts, and no further major interest, and a singn in pard's suit. {5-4-3-1}# 
2N : 15 pts, and no further major interest # 3N 16 pts, and no further major interest. 
2H/2S : 12-14 pts 3-5 card suit, depending * 
3C/3D : 15-16 pts 3-5 card suit, depending * 
3H/3S : 15-16 pts and natural (if it is possible!) 

*Note: 3 when raising pard, 4 when bidding new suit, 5 when rebidding 

Other responses to the 1N rebid: 
2D/2H/2S <9 pts, natural 
2N : 10-11 pts, invitational, no major interest. 
3D/3H/3S : 10-11 pts, GI, 6+ card suit when rebidding and 4 card support when
supporting. 
3C : Gosh I wish I could have bid a natural 2C!!