Start in Portugal: Now name the Country, that Borders Portugal, that comes first alphabetically. Every Country can only be named once. Borders only on overseas territories are not counted. If there are no borders left, go back to the last Country and name the next Country by alphabetical order, that hasn't been named yet.
Start in Portugal.
dubious borders not counted
French Guiana is considered a part of France and its borders do count here.
Shouldn't Kazakhstan come after Pakistan? At this point all borders are exhausted and we go as far back as China. Kazakhstan would be the first alphabetically of those remaining China neighbors.
kazakhstan borders turkmeninstan so that would come before uzbekistan
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another note, zimbabwe is listed 2x