Complex sentence: It is in prose, consisting of just twelve verses expounding the mystic syllable Aum, the three psychological states of waking, dreaming and deep sleep, and the transcendent fourth state of illumination.
Split into simpler sentences: It is in prose, consisting of just twelve verses. It expounds the mystic syllable Aum, the three psychological states of waking, dreaming and deep sleep, and the transcendent fourth state of illumination.