Mathematica contains the 31801 most frequent Russian words. These can be obtained using:

```
WordList["KnownWords", Language -> "Russian"]

```

Furthermore, the function `WordFrequencyData` returns the frequency of a word as a percentage:

[![a sample output from WordFrequencyData](https://i.stack.imgur.com/HOwcK.png)](https://i.stack.imgur.com/HOwcK.png)

How could I write a similar function `russianWordFrequencyRank` that returns **an integer corresponding to the word’s rank**?

For instance the most frequent word in the Russian language is "и" (which means "and"). My desired function should return 1 when fed this word.

```
russianWordFrequencyRank["и"] = 1

```

Here are some Russian words to use as examples:

```
russianWords = {"машина", "привет", "товарищ"}

```