In Notepad++, how to search for a pair of strings in a file that are separated by multiples lines?

Question

I have a file in Notepad++ that reads with repeating sections like this:

something here xx
something here xxx
INS*Y*D3*60
something here x
something here xx
something here xxx
something here xxxx
something here xxxxx
DTP*349*17
something here...

I want to be able to do a search to find all of the instances where the

 INS*Y 

and

 DTP*349 

appear as a pair of strings separated by unique rows of strings, skipping the string that ends the INS*Y row plus skipping all of the strings on the rows in between (which all contain unique information).

Answer 1

I have a file in Notepad++ that reads with repeating sections like this:

something here xx
something here xxx
INS*Y*D3*60
something here x
something here xx
something here xxx
something here xxxx
something here xxxxx
DTP*349*17
something here...

I want to be able to do a search to find all of the instances where the

 INS*Y 

and

 DTP*349 

appear as a pair of strings separated by unique rows of strings, skipping the string that ends the INS*Y row plus skipping all of the strings on the rows in between (which all contain unique information).

Answer 2

I have a file in Notepad++ that reads with repeating sections like this:

something here xx
something here xxx
INS*Y*D3*60
something here x
something here xx
something here xxx
something here xxxx
something here xxxxx
DTP*349*17
something here...

I want to be able to do a search to find all of the instances where the

 INS*Y 

and

 DTP*349 

appear as a pair of strings separated by unique rows of strings, skipping the string that ends the INS*Y row plus skipping all of the strings on the rows in between (which all contain unique information).