This example shows a grid of 18 cartoon faces, each randomly generated with different eye positions, eye radii, and mouth shapes. It demonstrates how React components can be composed to create reusable visual elements, with each face built from separate `Face`, `BackgroundCircle`, `Eyes`, and `Mouth` components. The code uses React (v17) for component rendering and D3’s `arc` generator to draw the mouth paths, while `d3.range` creates the grid layout. All faces are rendered as SVG elements within a coordinate system centered via SVG transforms.