Please combine multiple photos of the same person into a photorealistic group photo, retaining the original background of the provided images. Create three avatars, each wearing the same attire but with different poses and expressions (e.g., sitting and smiling, standing and waving and relaxing, or jumping and laughing). The characters should interact naturally, with unified lighting and shadows, creating a realistic and natural image, as if they were a single, multi-person group photo in the original setting.