List the styles of Eugene O'Neill

1. Naturalism: O'Neill's early plays, such as "The Hairy Ape" and "Beyond the Horizon," often embrace naturalistic elements, focusing on gritty, realistic portrayals of characters and their struggles.

2. Expressionism: O'Neill experimented with expressionistic techniques in plays like "The Emperor Jones" and "The Great God Brown," incorporating symbolic imagery and distorted, heightened language to explore characters' inner thoughts and emotions.

3. Epic Theatre: O'Neill's later works, such as "Strange Interlude" and "Mourning Becomes Electra," are often considered epic in scope, featuring sprawling narratives that cover multiple generations and complex psychological themes.

4. Tragedy: Many of O'Neill's plays, including "Long Day's Journey Into Night" and "The Iceman Cometh," are deeply tragic in nature, exploring themes of loss, regret, and the destructive effects of past trauma on individuals and families.

5. Experimental: O'Neill was known for his willingness to push the boundaries of traditional dramatic forms, incorporating innovative techniques and structures into his plays, such as the use of stream-of-consciousness narration in "Strange Interlude" and multiple perspectives in "Days Without End."