Points
For each group of 3 different symbols, each player scores 7 victory points.
Example: Continuing the above example, Alexandria has built 6 scientific structures but only has a single group of 3 different symbols, they score 7 extra points for a total of 21 victory points. If Alexandria had built an extra structure with the symbol, they would’ve scored: (9 + 4 + 4) + (7 + 7) = 31 victory points