Ключевые слова: abstract aluminum, angular, bear invitations, c, cedar, class, color, colors, concept, conceptual, consumption, core, crayons, cut, d, dark, direction, e, economical, efficiency, energy, f, follow up, fuel efficient, g, green, hnen, imagination, inefficient, l os, label, label information, labels, light, marker, ner, orange, pencil, pencils, point, points, rank, red, rodynamica, row, save, saving, te, teau, was, wood, yellow,