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It was great to work with you and [the team], thanks for your excellent work!
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You did a fantastic job. Your style with the participants is amazing to watch.
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The questions being asked for the [product] part of the trial are effective!
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I am really pleased with how the study is going.
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We just wanted to send a quick message to thank you for all your help in the last year and wish you Happy Holidays! We are blessed to be able to work with such great people.
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Wanted to say thank you to you and your team. I learned a lot working with you.