While it's pretty much running example_command.exe multiple times, this should give you the output you're looking for.
example_command.exe | findstr /C:"string_D " && example_command.exe | findstr /C:"string_B " && example_command.exe | findstr /C:"string_C " && example_command.exe | findstr /C:"string_A "
However like you said it will take 4 times as long.