꺼냈었던

In a sentence

• 그는 지난 이야기에서 꺼냈었던 주제를 다시 시작했다.

  He resumed the topic he had brought up in the previous story.

  In this sentence, '꺼냈었던' conveys the past action of bringing up or mentioning a topic that occurred prior to the current timeframe.

• 내가 어제 꺼냈었던 책을 어디에 두었는지 기억이 안 나.

  I can't remember where I placed the book I took out yesterday.

  Here, '꺼냈었던' is used to describe a past instance of having taken out or retrieved the book, indicating that the action occurred earlier.

• 우리가 꺼냈었던 아이디어가 최종 결정에 영향을 미쳤다.

  The ideas we had brought up influenced the final decision.

  The usage of '꺼냈었던' in this sentence refers to ideas that were previously discussed or suggested, thus emphasizing an earlier action of bringing forth ideas.