Used after opponent bid with 5-5 and 8+ HCP (10+ when vulnerable):

• • • (1♣)-2♣ after natural opening 1♣ - means 5♥5♠;

    • (2♣)-3♣, (3♣)-4♣, (1♦)-2♦, (2♦)-3♦, (3♦)-4♦ - means 5♥5♠;

    • (1♥)-2♥, (2♥)-3♥ - means 5♠ and 5+♣ or 5+♦;

    • (1♠)-2♠, (2♠)-3♠ - means 5♥ and 5+♣ or 5+♦;

    • 2NT entry with a jump - means the two minors fives not counting the opponent's suit.