Multi-Pattern Web Advertisement Grid

Create 9 patterns of advertisements satisfying the following requirements and arrange them in a single image:

- This is a web advertisement to encourage participation in a [event content].
- Please come up with the copywriting, eye-catching visual, background image, and layout.
- It is desirable for each of the 9 patterns to have a completely different taste.
- The composition should include a main copy, sub-copy, date/time, 'free' tag, and a button.
- The target audience is [target group].