Vlookup Data And Return Results On Multiple Entries

So i have a spreadsheet that has a list of members and how many events they have attended. That is fine because i achieved this by doing a countif function on their account number. The spreadsheet has to sheets Events Attended TOTAl and List. In the list it has their name account number and what event they attended and what date. What i need is to have a function that will lookup their account number and return what event they attended but they might have been to 4 different events.

I have a total of 5 columns dedicated to Event attended so we can tell it to lookup first event and return result then have an if function in the next column to lookup event and if its returned in previous column move onto the next event attended.