Ключевые слова: 5, 19, assistant, back, ball, board, change, competition, double, electronic, field, five, football, footballer, four, game, green, hand, linesman, man, match, national, nineteen, orange, people, pitch, play, player, polish, professional, referee, replacement, representation, reserve, showing, sign, signal, soccer, sport, stage, substitution, team, technic, technical, tournament, up,