The throwing techniques are distinguished between left grip (Hidari kumi kata) and right grip (Migi kumi kata):
Kenka yotsu – against the same sided grip; e.g. Tori right grip, UKE left grip.
Ai yotsu – same sided grip, both partners / fighters occupy the same grip.
Within the competition training a throwing technique should be trained with Migi and Hidari kumi kata. It is also for a good judoka a mandatory practice to train the techniques also as Ai- and as Kenka yotsu with the partner.