Prompt

Build a 2×2 grid. The whole is a story, in a cartoon style. The content of the first grid is a puppy going out. The content of the second grid is the puppy walking on the grass. The content of the third grid is the puppy urinating on a tree. The content of the fourth grid is the puppy scratching the place where it urinated with its paws. The image of the puppy in each grid must remain consistent.