- Ikkajo - control of uke's body through the elbow and shoulder
- Nikajo - control of uke's body through the wrist, elbow and shoulder
- Sankajo - control of uke's body through the hand, wrist, elbow, and shoulder
- Yonkajo - control of uke's body through a small point on the lower arm (not using the joint)
Note the common element: Control of uke's body. Sensei explains that this control is only possible when we are in contact with uke's body. Thus, every motion of shite, through the line of power, should keep contact with uke and result in control of their body ultimately through the shoulder by means of one of the four principles above.
When training, be mindful of the control of uke's shoulder through the lines, and be certain to take uke's balance as early as possible within the technique. Failure to do so means failed technique. It simply cannot be correct without contact and control.