They were a cell ! They get along and When the episode was ending yesterday I saw the three of them forming a circle (if I'm not mistaken)!
they can add Yurina,Ruiqi and Wen Zhe too.
Ahhhhh... I know we're going to see more of Suyeon within Kpop and I love that, but I need more music of the other girls!!!! I don't want the Chinese girls to fade ... 
Regarding Yurina, I hope this isn't her last chance !
