Ключевые слова: background, cement, circle, close, corrosion, cover, crack, cross, dirty, ditch, drain, emblem, empty, flood, frame, grass, ground, gutter, hole, industry, iron, leaf, lock, manhole, metal, old, pavement, pollute, public, rectangle, rectangular, road, root, rough, rusted, sewage, sewer, soil, steel, street, underground, urban, waste, water, wet,