The student tries to assemble the legs.
text: So you can turn one back and also that it fits through.
text: But you want tubes of the same size cross inside.
text: Ah. Okay.
text: Yeah. Now, you can rotate that one. So that…
text: Exactly!
text: But actually, now it's the wrong one on the inside, you have to reverse the positions.
text: You want to take the one of them inside out, completely and you want to put the other one inside.