Step 1: Remember the facet formula for Literature (O) in Colon Classification. It is O[P], [P2], [P3], [P4], where each [P] indicates a facet.
Step 2: Define each facet in the 6th edition of CC:\[\begin{array}{rl} \bullet & \text{[P] (Personality, Level 1): Represents the (A) Language of the literature.} \\ \bullet & \text{[P2] (Personality, Level 2): Represents the literary (B) Form (e.g., poetry, drama, fiction).} \\ \bullet & \text{[P3] (Personality, Level 3): Represents the (D) Author.} \\ \bullet & \text{[P4] (Personality, Level 4): Represents the (C) Work (i.e., the specific title).} \\ \end{array}\]
Step 3: Organize the facets based on the formula.The order is Language, Form, Author, Work, corresponding to (A), (B), (D), (C).