This is the 6831st most frequent Russian word.
nn
It seems like "nn" is not a word in Russian. Could you clarify or check for a typo?
Here 'nn' simulates an incorrect or placeholder form in Russian.
Он нн написал письмо.
He did n/a write a letter.
In this case, 'nn' is employed as a placeholder or abstract representation for a word.
Слово 'nn' используется как пример.
The word 'nn' is used as an example.
'nn' here might signify an unknown term or placeholder in a sentence intended for discussion.