Ключевые слова: alphabet, background, balance, basic, block, blocks, bricks, brown, build, business, clock, colours, concept, construct, create, cube, cubes, cubic, development, education, form, four, high, idea, learn, letter, message, object, pyramid, rules, scattered, shape, simple, skill, space, square, stack, stacked, structure, tower, vertical, vertically, wood, wooden, word,