Your favorite Kpop groups but you just keep adding members

Soloist : Hynn ( and IU, Chungha)

Duo : Davichi

Trio : SNSD TTS ( almost a tie with Orange Caramel)

4 members group : Mamamoo

5 members group : Red Velvet

6 members group : Purple Kiss ( or past Apink and current Oh My Girl)

7 members group : Dreamcatcher

8 members group : Lovelyz

9 members group : Twice

10 members group : Cherry Bullet (the original line-up)

11 members group : I.O.I

I stopped there because I could not think to one group with 12 members that I care about.