uncontested response to 2Major: 1st step = shortness ask 2nd step = feature ask New suit = 17+hcp, good suit, forcing 4♣ = modified keycard responses: 4♦ = 1keycard No Q(trump) 4♥ = 1keycard + Q(trump) 4♠ = 2keycard No Q(trump) 4NT = 2keycard + Q(trump) 5suit = 1keycard, Void in suit(Trump = ♣) 5NT = 2keycard, undisclosed Void