I have a .txt file and I need to convert it to CSV.   

This is the code I'm using to convert the file:

```
import pandas as pd

wb = pd.read_csv('12.txt', encoding='utf-8', delimiter = '،', header = None)

wb.to_csv('12.csv',encoding='utf-8-sig', index = None)

```

The problem is, in each line, the first and second words need to be in separate cells, however they are not separated by commas :

```
This is an, example, to show, you
The second line, is, the, same
My file contains, thousands of, sentences

```

As shown in the example, only the first and second words of each line are supposed to be in separate cells (Other cells might contain more than one word!).
How can I add commas ONLY after the first and second words in each line using Python?

Thanks