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The ball must be stationary and on the ground.
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A popular method for identifying the different signals is that, for indirect free kicks, the referee holds his hand above his head, creating the letter "I", for an indirect free kick. The referee signals an indirect free kick by raising the arm vertically above the head a direct free kick is signaled by extending the arm horizontally. Often several players ( red) will line up for a free kick, so as to mask their intentions to the defending team ( blue).
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