Ключевые слова: arrow, arrows, brush, bubble, calligraphy, chalk, chalk drawings, color, colors, contour, contours, crayon, crayons, different, doodle, gray, grayscale, grey, hatch, hatching, heart, hearts, illustration, isolated, isolation, light, line, lines, mark, marker, minimal, outline, pastel, pen, pencil, quick, scribble, set, shape, sign, simple, sketch, soft, stroke, style, symbol, underline stroke, underlines, whiting,