You pick up your usual worthless hand as East. You have lost interest already when you "listen" to the NS bidding:
2♣ - 2♦
2N* - 6N
p
* 22-24 balanced.
Your partner leads ♦2 (4th best from any holding), 8 from dummy, your 10 and declarer's king. Next South cashes ♣AK, partner following with the 2 and 7 (reverse count), and you let go a diamond.
Declarer's next move is ♥5 from hand, 9 from West, 10 and your queen. So you had a trick after all.
No claim yet, so maybe there is a chance. Take over please. It's not easy, but nobody promised you that it would be. Hidden text would be nice if you care to make your contribution.
Roland

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South: 6NT
Lead: D2