Elvis or others can correct me if I'm wrong about this, but I believe as long as a team punts BEHIND the LOS and the punter, the ball, or a player with the ball has never been beyond the LOS, most any punt is legal. They can punt as many times as they want. Whether the punter has protection or not, however, would be a different question. But the ability to execute a scrimmage kick isn't based on whether a team had previously thrown a pass, fumbled, made an exchange of any kind, ran around, punts previously, etc.