class GermanUpperLowercaseWords {

  private GermanUpperLowercaseWords() {
  }

  @NotNull
  private static Set<String> getUppercaseWords(List<String> lines) {
    Set<String> uppercaseWords = new HashSet<>();
    for (String line : lines) {
      if (StringTools.startsWithUppercase(line)) {
        uppercaseWords.add(line);
      }
    }
    return uppercaseWords;
  }

  public static void main(String[] args) throws IOException {<FILL_FUNCTION_BODY>}
  
}

    if (args.length != 1) {
      System.out.println("Usage: " + GermanUpperLowercaseWords.class.getSimpleName() + " <wordList>");
      System.exit(1);
    }
    List<String> lines = Files.readAllLines(Paths.get(args[0]));
    Set<String> uppercaseWords = getUppercaseWords(lines);
    for (String line : lines) {
      String uppercased = StringTools.uppercaseFirstChar(line);
      if (!StringTools.startsWithUppercase(line) && uppercaseWords.contains(uppercased)) {
        System.out.println(line + "; " + uppercased);
      }
    }
  
<no_super_class>