How to merge strings by attribute?

Question

Google Sheets

Let's say I have a table:

Maxim | 20 | 145
Oleg | 55 | 888
Maxim | 20 | 145 , 755
Maxim | 33 | 666
Roman | 20 | 6464
Roman | 20 | 444

What to do, that the first column has been merged?
That is, so that there are no duplicates in the first column, and the remaining columns are linked.

It should look like this:

Maxim | 20, 33 | 145, 755, 666
Oleg | 55 | 888
Roman | 20 | 6464, 444