OR4

4.1 Strong 5-4M Opening Hand

4.2 Strong 5-5M Opening Hand

4.3 Strong 6-4 Opening Hand

4.4 Strong 5-5m Opening Hand

4.5 Strong 6-5 Opening Hand

4.6 Longer Lower-Ranking Suit

4.7 Strong 5-6 Opening Hand

4.8 5422 Opening Hand

4.9 Reversing with 4-6 Shape

4.10 Reversing with 5-6 Shape