A set of colorful speech bubbles, vector illustration with a white background. The shapes should include rounded corners and subtle shadows to give the appearance of hand-drawn lines. They can have pastel colors like teal or pink stacked on top of each other. Each bubble is filled in and has a simple shape that resembles an empty conversation cloud. There is no text inside them but they could be used for communication themes or graphic design projects. Isolated on a white background. Vector Illustration in the style of graphic design. --ar 16:9