Hi,
I don’t really understand the classification for NX words. Like some are A1, A4, A10, or even A13. What’s that?
Hi,
I don’t really understand the classification for NX words. Like some are A1, A4, A10, or even A13. What’s that?
The “a” stands for additional and they are additional vocab sets that are not JLPT words 
Oh, okay as simple as that! Thanks 
I believe the plan is to add additional example sentences for all of them. A1 and A2 are complete IIRC.