[ibbm]

I have an excel spreadsheet with the list of accounts and the description
types that looks something like this:
Account Type

12345 1A
45678 1B
78912 1A
55679 2
24567 1A

I want to create a table that does a level break on the Type and list all
accounts that have that type like this

Type Accounts
1A 12345, 78912, 24567
1B 45678
2 55679

Is this doable with mail merge?

Thanks in advance for your help