If the opened suit is a MAJOR suit:
• The responder determines if its hand is suitable to SUPPORT the opened major suit and play a major suit contract.
• If not, the responder determines if its hand is suitable to PROPOSE the other major suit and play a major suit contract.
#3 Priority
• If the responder cannot support the opened major suit, and cannot propose the other major suit, the responder can PROPOSE the better minor suit in its hand.
If the opened suit is a MINOR suit:
• The responder ignores the minor suit for the moment.
• The responder determines if its hand is suitable to PROPOSE a major suit and play a major suit contract.
#3 Priority
• If the responder cannot propose a major suit, the responder can either SUPPORT the opened minor suit, or PROPOSE the other minor suit.