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3, 30-35, 30-40, 30's, 30s, 35-40, 40-45, 40-50, 40's, 40s, 45-50, 50-55, 50-60, 55-60, adult, associate, collaborating, colleague, color, colour, communicating, computer, connecting, connexion, discussion, fellow, female, fifties, fifty, forties, forty, gal, gentleman, guy, human, human being, indoor, inside, joining, lab, lady, male, mid life, middle age, middle aged, middle-age, middle-aged, pc, person, personal computer, portable computer, r&d, research and development, speaking, talking, team, thirties, thirty, three, together, toiling, using, waist-up, western european, white coat, wireless, women, work, world wide web,