Ключевые слова: abstract, background, barricade, barrier, blue, border, cage, chain, chained, chainlink, close, color, construction, cross, enclose, fence, grid, guard, industrial, iron, isolated, jail, link, mesh, metal, metallic, net, netting, outdoor, pattern, prison, protect, protection, safety, seamless, security, separate, shape, sky, steel, strong, texture, wall, wire,