The student aligns the upper tray.
text: So, yes.
text: It goes inside the legs. You can just insert it inside.
text: But, please keep the top shelf laying down, the way you'll be able to fix the top shelf.
text: So can you go back to the position it was before?  So again *unintelligible*.
text: Now that top shelf, it should go like, you shouldn't try to put it behind, like, you should just put it like inside.
text: Yes, that way.