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[/quote]
It's not the exact quote that I meant as a classic example, but inventing plural forms for the word "пальто" in general, that's why I wrote 'sample'.[/quote]

Then "This _is usually given...

This [s:2k2vut11]sample[/s:2k2vut11] dialogue; quote; these lines is usually given as a classic example of 'uneducated' person's speech in Russian schools.

This is one of the indeclinable nouns (or zero declension); mostly loan words and foreign proper nouns