The 8 hip movements

I have a question about asanas that specifically stretch the hips. I remember InnnerAthlete posted once there are 8 hip movements. Before reading that i’ve noticed it in my practice. For example, ardha titali asana and padmasana stretch my hips differently than the lunge, which is still different from the way the legs are crossed over each other in cow pose. InnerAthlete, can you detail these 8 hip movements some more and maybe tell an asana that works each movement. Thanks

Certainly:

Adduction
Abduction
Flexion
Extension
Internal Rotation
External Rotation
Compression
Extension (traction)

Excepting compression, which is not done in the hip work, they are most effectively worked in the Purna Yoga Beginer’s Hip Opening Series. That series is a supine series which works all six of the movement (because the seventh is never done and therefore the eighth is assumed).