Ключевые слова: abstraction, alphabet, background, black, bright, burn, burn paper, burning question, business, energy, exciting, fiery, fire, flame, flammable, flares, flash, glow, glowing, hand, hot, light, mark, orange, paper, question, question mark, red, scald, scalding, scorched, shine, sign, smoke, solve problem, symbol, techno, text, uncertainty, unsolved problem, who, why,