Use LOWER CASE and NO PUNCTUATION. Cities are MINIMUM 100K POPULATION (therefore 3 letters don't have all 50). This quiz is meant to be a bit of a time challenge, so the bonuses are there but you have to move to accumulate a good amount of time. Three letters (Q, U, and X) have less than 50 cities each, you can see how many there are clicking on each letter in the list box to display the cities for that letter. A handful of cities can be spelled with a different starting letter - I tried to use the most common English spelling for those.