Complex sentence: The members of the Red unit were Kahi, Jung Ah, Uee and Nana, and the Blue unit consisted of Jooyeon, Raina, Lizzy and E-Young.
Split into simpler sentences: The members of the Red unit are Kahi, Jung Ah, Uee and Nana. The blue unit are Jooyeon, Raina, Lizzy and E-Young.