I understand that Anki and therefore Pleco use the headword for duplicate checking. I would like to gradually change the headwords into example sentences which obviously makes the checking impossible. I was wondering whether there is a workaround i.e. by adding a separate field for the example. I haven't been able to figure out how to do that. Thusfar I've only really used simple bi-directional cards so if there is a simple way to convert (preferably within Android) them to circumvent the problem that would be wonderful.