Various Geometric Shapes and Patterns

This pixel art composition features four distinct square panels, each showcasing a fundamental geometric design. The top-left panel is a solid dark grey square, while the top-right displays a dark grey square outline with a black center. In the bottom-left, a grey square frames five smaller black squares forming a directional cross pattern. Completing the set, the bottom-right panel contains two parallel black diagonal lines set against a grey background. The entire piece has a clean, minimalist aesthetic, focusing on basic shapes and their arrangements.

pixel art - geometric shapes - patterns - squares - lines - abstract