Ключевые слова: 4, abc, aid, alphabet, alphabetical, american, asl, communicate, communication, concept, conceptual, dactylology, deaf, demonstrate, disability, disabled, dumb, education, expressing, expression, expressive, finger, fingerspelling, gesticulating, gesticulation, gestural, gesture, gesturing, hand, handicap, handicapped, help, human, international, isolated, language, learn, letter, metaphor, nonverbal, person, showing, sign, signal, spelling, symbol, symbolic, white, woman,