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a team with 31 players including 3 goalkeepers, 12 defenders, 9 midfielders and 7 strikers the coach usually does not disclose the list of 11 players who will play, but only reveals the team kicking according to the diagram 3 -4-3 means 3 defenders, 4 midfielders, 3 strikers and 1 goalkeeper. If the team plays in this formation, how many possible formations will there be