I believe there is no kata in aikido. If somebody does kind of kata, it is counterproductive and a nonsense in the context of O sensei teaching..
My experience is Aikido is limited, so allow me to ask:
Does not most aikido training consist of prearranged attack and defense?
There is randori in Aikido of course, but it doesn't seem that that is the primary means of training, from what I've seen.