Ключевые слова: abstract, backdrop, background, checkerboard, checkered, chess, chessboard, circle, circular, concentric, decor, decorative, design, distortion, floor, geometric, geometry, grid, helix, illusion, line, mandala, mesh, monochrome, mosaic, optical, pattern, perspective, rectangle, repetition, rhombus, shape, spin, spiral, square, squared, strip, stripe, striped, swirl, texture, tile, torsion, twirl, twist, vintage, vortex, wallpaper, whirl,