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friendly/unfriendly, sharp/dull, long/short, old/new, hard/soft, tall/short, loud/quiet, young/old, fast/slow, messy/tidy, thick/thin, cool/geeky, big/small, light/heavy, weak/strong, good/bad, handsome/ugly, poor/rich, mad/happy, beautiful/ugly, difficult/easy, heavy/thin, full/empty, clean/dirty
