1♦, 4♠, 5♦, Pass, 5♥, Pass, South can pass 5♥ or bid 6♦ or 6♥. Opening ♦ indicates 13+HCP and a weak ♣ suit. She is looking for a major. East's 4♠ bid also shows 13+HCP with 8 card suit. South knows West has a maximum of 8 HCP. Also knows that North is short ♠ and doesn't have a biddable ♣ suit. Therefor, North has a biddable ♥ suit. Hands fit! Contract will depend on length, not points. With a 6 card ♦ suit, she knows they have 10 ♦ and at least a strong 7 card ♥ suit with the ability to cross ruff the black suits. She proposes a 5♦ contract hoping that North can correct by showing a good ♥ suit at the 5 level. If North corrects, South proposes a contract that will make at either level. If East leads the A♠, N/S make 7. Code