Two teams, A and B, play badminton, and each side has 4 players to play in the order arranged in advance. Player No. 1 of the two sides will compete first, the loser will be eliminated, and the winner will continue to compete with the opponent No. 2 player...until all players on one side are eliminated, and the other side wins. This forms a game process. Then, all possible different game processes How many kinds are there?
甲、乙两队比赛羽毛球，双方各出4名队员按事先排好的顺序出场比赛．双方先由1号队员比赛，负者被淘汰，胜者继续与对方2号队员比赛…直到一方队员全部被淘汰为止，另一方获胜，这样形成一个比赛过程，那么，所有可能出现的不同比赛过程共有多少种？
<gadget id="calculator">8 + 7 + 6 + 5 + 4 + 3 + 2</gadget>
<output>35</output>

<gadget id="calculator">2 * 35</gadget>
<output>70</output>

<result>70</result>