| Dbl | Strength, ca 15+ |
| 2 ♣ | At least 5-4 majors |
| Pass | 5+ ♣ , suggestion to play |
| Rdbl | Asking for better/longer major |
| 2 ♦ | 5+ ♦ , suggestion to play |
| 2 ♦ | Asking for better/longer major |
| 2 ♦ | A weak major or a strong minor |
| 2 ♥ ♠ | Constructive |
| 2NT | 5-5 minors |
| 3X | Preemptive |