Exporting the preprocessed text data into Excel File

Hi,

I really need your help. I have created a predictive model. The dataset I'm using contains several text attributes that were merged into one text attribute/column during the preprocessing phase. This preprocessing involved steps such as tokenization, stopword removal, token filtering, stemming, and generating n-grams. Could you please guide me on how to unmerged back all those text attributes and  into different columns as they were before? Additionally, I would like to export the data into an Excel file so that I can compare the original unprocessed text with the preprocessed text. Thank you for your assistance.