Three stage of awareness.

Level 1 –
Aware what we are aware of, which is awareness.

Conscious of what we are conscious of, take it as consciousness.

Observe what we are observing of, think that is the observer.

Level 2 –
Aware of what we are aware of is not awareness.

What we are conscious of is not consciousness.

Observe what we observe is not the observer.

Level 3 –
Aware what we are aware of, both are one.

Conscious of what we are conscious of, both are empty.

Observe what we are observe of, both are illusion.