NORTH  9762  JT973  7  QJ7  AK85  65  T9852  T3    T43  AK84  AQ6  654    QJ  Q2  KJ43  AK982

Dealer: South    Vul: None   MP Scoring West Pass Pass North 1 Pass East Pass Pass South 1 2

East conservatively passed out 2 rather try an emaciated 4 card spade suit or suggest both spades and hearts with such as 2 in pass-out seat.

West led a heart and East won A and K switching to third or fourth best 3.
East won A and K and took stock.
Usually South has at least nine cards in the minors for those bids and more often than not longer diamonds than clubs.
West led a third round of spades to reduce believed South club length from four to three in the scenario South has 5 diamonds and 4 clubs to start.
Unfortunately East didn't have a 4th club to establish.
Declarer drew trump ending in dummy, discarding four diamonds on dummy's 9 JT9

How could East have helped West?
In cashing the first two heart, East could have shown count in one of the non trump suits.
Which one by convention?
How about as in Trump Suit Preference Count it shows diamond count (the lowest ranking unknown offsuit)?
Playing standard carding, an odd number of diamonds could be signalled low-high, first the K then the A. An even number of diamonds would cash first the A.
West could then abandon plan A and simply allow East to cash the A to hold declarer to eight tricks, for a slightly better, even if still below average, score.

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