labels, classification, saving, energetic, certification, certified, pictogram,

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Keywords: attested, blank, building, caucasian, certification, certified, classification, clean, climate, cloud, colored, electric, electricity, energetic, energy, european, firmament, global, green, home, house, isolated, isolation, labels, lawn, letter, ozone, pictogram, pictograph, power, renewable, saving, sign, sky, symbol, trade