Ключевые слова: arrow, attack, background, ball, black, blackboard, board, chalk, chalkboard, championship, coach, competition, concept, defense, diagram, drawn, field, foot, football, game, illustration, instruction, league, line, map, offense, organization, plan, play, playbook, running, safety, scheme, score, sketch, soccer, sport, sportive, strategy, synergy, tactic, team, teamwork, training, zone,