Super Junior wows with their incredible flexibility

Super Junior is attracting much attention for a photo revealing their impressive flexibility.
On June 2nd, Super Junior’s Eunhyuk attached the above photo to tweet and wrote “Either we are stretching or having a conference about our choreography“.
In the photo, four Super Junior members are holding a difficult stretching pose as they all face each other.
Followers who saw the photo commented, “I thought men were supposed to be stiff“, “Even I can’t do that“, “Do they stretch together like this everyday? Daebak.”
Can you guess which four members are stretching?

Source & Image: Eunhyuk’s Twitter