T-step means that the feet are T-shaped, the heel of one foot is close to the middle of the other, and the step is based on T-step, the knees are close together, and the hind foot is stretched and bent.
On the basis of the T-step, bend one leg forward in a big step, and then straighten and tighten your back. The lunge is a backward sign, taking a step forward or sideways, bending 90 degrees and straightening your back. BBK is made of one foot, and the other foot is tight. When stepping, you can do it in front, back, left and right of the supporting foot.