Type all country tripoints, from West to East: you are shown the initials of the 3 countries and distance from the previous one.
To guess a tripoint, type the first 3 letters of the three countries in any order. These are the first 3 letters of the standard JetPunk name, so for example you could type AUS-FRA-GER, FRA-GER-AUS etc for a hypthetical Austria-France-Germany tripoint. For some countries you are also allowed 3 different letters (eg UAE, UK, DRC...). Hint: the first one is near Mexico
Note: tripoints that exist twice appear twice in the quiz (eg Austria-Liechtenstein-Switzerland)
Data source: http://en.wikipedia.org/wiki/List_of_tripoints
Borders within lakes/inland seas are considered (eg Caspian sea)