Ключевые слова: arbitrator, assistant, back, ball, board, change, electronic, field, football, four, game, green, hand, linesman, man, match, national, nine, ninety, orange, pitch, play, player, polish, professional, red, referee, replacement, representation, reserve, sign, signal, soccer, sport, stage, substitution, team, technic, technical, tournament, umpire, up,