1. change of place both sides should, in each of the 1th, 3, 5, and so after the end of the singular, and each ends when both sides and of the Council as a singular, change of place.
2. no any of the following conditions occur, is sentenced to no. (1) in front of the ball a second time, could not fight back over the net. (2) balls touching each other's field outside the boundaries of the fire back on the ground, the fixture or other things.
(3) fight back the air ball failed.
(4) intentionally bat the ball more than once.
(5) players ' body, bat, touch on the ball during a serve.
(6), hitting the net.
(7) throw your ball
3. groove ball ball on the line are considered good.
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