Besides the Four Alternatives, Zen uses the Five…

““Besides the Four Alternatives, Zen uses the Five Categories[FN#203] in order to explain the relation between reality and phenomena. The first is 'Relativity in Absolute,' which means that the universe appears to be consisting in relativities, owing to our relative knowledge; but these relativities are based on absolute reality. The second is 'Absolute in Relativity,' which means Absolute Reality does not remain inactive, but manifests itself as relative phenomena. The third is 'Relativity out of Absolute,' which means Absolute Reality is all in all, and relative phenomena come out of it as its secondary and subordinate forms. The fourth is 'Absolute up to Relativity,' which means relative phenomena always play an important part on the stage of the world; it is through these phenomena that Absolute Reality comes to be understood. The fifth is the 'Union of both Absolute and Relativity,' which means Absolute Reality is not fundamental or essential to relative phenomena, nor relative phenomena subordinate or secondary to Absolute Reality—that is to say, they are one and the same cosmic life, Absolute Reality being that life experienced inwardly by intuition, while relative phenomena are the same life outwardly observed by senses. The first four Categories are taught to prepare the student's mind for the acceptance of the last one, which reveals the most profound truth. [FN#203]””

— Kaiten Nukariya