I want merge words with the same value in dataframe into one, stick the words next to each other at once
ex)
| en | ko | 
|---|---|
| acrania | a | 
| acrania | b | 
| acrania | c | 
| acrania | d | 
=>
| en | ko | 
|---|---|
| acrania | a,b,c,d | 
I want to make it in the form above.please help me
I was only able to remove duplicates in Excel, and it is too difficult for me to paste them sideways after removing duplicates.