| <svg xmlns="http://www.w3.org/2000/svg"> | |
| <rect x="20" y="20" width="400" height="400" fill="blue"/> | |
| <rect x="20" y="20" width="150" height="150" fill="white"/> | |
| <rect x="270" y="270" width="150" height="150" fill="white"/> | |
| <rect x="120" y="120" width="200" height="200" fill="green"/> | |
| </svg> |
