Your MnemoRep app comes bundled with four sample stacks, about things to learn about the Dutch language. The full spreadsheets for each stack can be downloaded here.
When imported in your MnemoRep app, these spreadsheets will extend your flashcard study stacks with many more cards.
If you have accidentally deleted one of the standard stacks in your MnemoRep app, then use the below downloads to restore your cards. Plus get some more to study.