1H 1S 8+ HCP, NAT 1S
1N! 13- HCP, F1, inv- 1N! 13- HCP, F1, inv-
2m 14+ HCP, NAT, FG 2x 14+ HCP, NAT, FG
2H 3H 8-11 or 4H 7-10 2S 3S 8-11 or 4S 7-10
2S 4+H FG 3C 4+S FG
2N a weak often 7+m 2N a weak often 7+m
3C 4H 11-12 FG or 3H 16+ BAL ST 3D 4S 11-12 FG or 3S 16+ BAL ST
3D 3H 13-15 BAL CoG 3H 3S 13-15 BAL CoG
3H (NV)PRE (V)4H 9-10 mild inv 3S (NV)PRE (V)4S 9-10 mild inv
3S Jordan, H rkcb 3N Jordan, S rkcb
3N+ H fit x void 4C+ S fit x void
1H-1S; 2N! 14-15, good 6+H w/ 3S
3m 14-15, 55+
3H 14-15, good 6+H w/o 3S
3S 14-15, good fit
1H-1N; 2N! 15 HCP, 5H332
1S-1N; 2N! 14-15, good 6+S w/ 3H
3x 14-15, 55+
3S 14-15, good 6+S w/o 3H
(這裡的14-15是牌值, 請依大牌集中的情況自行判斷)
1M-1N; 2x-3m 8-11, 6+m