Ключевые слова: abstract, atom, bials, biology, blue, bottle, chalk, chemical, chemistry, color, complex, computation, design, difficult, drug, education, examination, formula, glass, glasses, line, manuscript, material, medical, medicine, molecular, molecule, organic, painting, paper, particle, pattern, pill, reaction, repeated, research, science, scientific, scratch, scribble, seamless, slate, structure, symbol, syringe, technology, texture, vials,