5.

Ilgiyae becomes several techniques and then, every technique at the end. For that one technique is brought up.
Ilgiyae is brought up in two ways: inner way and outer way.
Outer way first. Begin from one simple technique. You will add some motion before and after it as you get skilled in it. You just intend to do one technique, but that technique adapts itself to situations. So it is seen different to others. It means it gets complicated. The technique changes and develops. This is how a technique is brought up outer way.
Inner way now. If you get skilled in a technique, and if you obtain it in real sense, you will find it in another motions and another techniques. You come to know that different techniques are same actually. Although you perform different techniques you feel that you repeat same ones. Your experience, and your mind recognizes the ilgiyae. This is how a technique is brought up inner way.