Is it possible to use multiple letters in the 'begins with' filter

Summary:

We have some OTBI reports that we use an agent to schedule and they have gone over 25k rows so now they are not including the full data set (currently 44k rows)

Content (please ensure you mask any confidential information):

I know the best solution would be to re-do this report in BIP, but I have limited SQL knowledge. I have to split the report somehow, and the best way would be to run from customer name A-M and N-Z in two separate agents, then combine. Does anyone know if it is possible to use the customer name field with 'begins with' filter, and use multiple letters/range of letters? I have tried inputting with commas in-between but this didn't work. Thanks in advance, still very much learning!