It's in the instruction even though the title alone is kinda missleading. Anyway it's a weird choice to combine them both since the have completly different meanings (burg=castle and berg=mountain)
Please type the full states, Baden-Württemberg, Schleswig-Holstein, North Rhine-Westphalia, also please remove the space behind the comma at the last one
„North Rhine“, „Baden“, and „Schleswig“ are not currently states of Germany, and Ludwigsburg is not even in the „Baden“ part of BW, it's in Württemberg. (If it helps to conserve space, you can write NRW for North Rhine-Westphalia.)
Edit: Heidelberg too.