Please check out "잤았더라면" again because there is no such a phrase.^^ "-ㅆ 더라면" usually refers to hypothetical situations in the past, so that "잤더라면" is correct meaning "If I had slept,~~" in English. Also the same goes for "잤다면",but I think "잤다면" is more often used in conversation. As I see it, "잤더라면" conveys more strong feelings than "잤다면". macam mana nak sebut "잤더라면" dalam bahasa melayu? hanya "jika dah aku tidur"? Thank you for your comments on my notebook.^^ ^_______^

"잤었더라면" makes sense.^^