Ключевые слова: activity, backyard, block, border stones, brick, bricklayer, building, clothing, cobblestone, concrete stones, construction, construction worker, day, equipment, flat, floor, gray, ground, hand, laying, manual, mason, masonry, material, outdoors, patio, pave, pavement, paver, paving, professional, protective, road, rubber gloves, rubber hammer, sand, sidewalk, skill, stone slabs, surface, tool, walkway, work,