This would show up in an unusual number of repeats. Because more of these letters would have been common German letters like E and N, there would be more repeats than in a random position.

BERLIN — Most people dread a letter from the tax office, so spare a thought for the German man who got 1,700 of them. In an administrative meltdown worthy of a Franz Kafka novel, the mountain of ...

Nice to see you too Makeda! So great that you're already speaking German. Es ist schön dich wiederzusehen. Some letters sound different to English in German, which is why I didn't understand you ...