"어머, 그랬어요? 고생하셨겠네요!" Oh, did you? You must have gone through a lot. (When you heard the other person saying that she/he did a hard work or experienced a hard thing, you can say this sentence to show your empathy.) 어머(Oh), 그랬어요(was that so) (did you) ? 고생하셨겠네요! 고생하다undergo hardship + 시(honorific speech) + -었겠다(when you guess the past action+ -네요(when you realize something new)