Thanks for your feedback and trying! =)
I will try to explain it anyway: imagine a chess field with pieces on it. And now you need to place more figures on this field according to the picture. If there is a figure in the place where you want to install, you remove it and put a new one. And you have the right to decide for yourself how to rotate this picture, how to place a 4x4 field on a 6x6 field (frame and rotation).
I just didn't have time to do the training, I'm sorry.