1) four kinds of individuals / ordinary persons {so so skye bo} pious attendants {nyan thos} shravaka. self-centered buddhas {rang rgyal} pratyekabuddha. and bodhisattvas {byang chub sems dpa'}. 2) four types of persons 1) {mun khrod nas mun khrod du 'gro ba} one who passes from darkness to darkness. 2) {mun khrod nas snang bar 'gro ba} one who passes from darkness to light. 3) {snang ba nas mun du khrod 'gro ba} one who passes from light to darkness. 4) {snang ba nas snang bar 'gro ba} one who passes from light to light