Ключевые слова: 1, attached, background, black, block, business, challenge, concept, effect, finish, fit, focus, gray, incomplete, isolated, join, last, merging, metaphor, missing, one, patience, pattern, piece, placing, problem, selective, solution, solving, square, stack, strategy, symbol, symbolizing, tecture, text, tone, uncomplete, vignette, white, wood, wooden,