How do I search for two Files with same file name using batch script

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batch

I have total 6 files :-

LS_PRSAHD_123.txt , LS_PRSADT_123.txt , LS_PRSATD_123.txt //
LS_PRSAHD_456.txt , LS_PRSADT_456.txt , LS_PRSADT_456.txt //

However these 123,456 these numbers might be changed. I have tried with only one file but the problem here is same naming type 2 Files are there and there are total 6 files. I need to search for those files and if those are exists then I need to perform some other tasks . How to do this .Kindly Suggest