MySQL Combine/Merge Multiple Rows With same Colum Name and Group by Username

I have a table with the following fields: Username | Occupation | Skills

There are multiple rows from the same user

SELECT * FROM TABLE ORDER BY username gives the following results

User1 | Teacher | Photoshop, Wordpress
User1 | Cashier | CMS
User1 | Painter | Carpentry
User2 | Cashier | Drupal, Window Washing
User2 | Captain | Flying
User2 | Driver | Loading
User3 | Technician | Software, Windows
User3 | Technician II | Hardware

I don't know if it's possible but I would like to find a query that can merge/combine rows with the same column name so that the result would be like below.

WANTED RESULT

User1 | Teacher, Cashier, Painter | Photoshop, Wordpress, CMS, Carpentry
User2 | Cashier, Captain, Driver | Drupal, Window Washing, Flying, Loading
User3 | Technician, Technician II | Software, Windows, Hardware