If you haven't read previous interviews then you might want to read that first [here]
There were 5 girls as you know, Hyoyeon, Yuri, Sooyoung, Yoona, and Sunny. Watch them in that order.
[HyoYeon's part]
[Yuri's part]
[SooYoung's part]
[YoonA's part]
[Sunny's part]