As can be seen from the second cube, the numbers of two adjacent faces of 1 are 2 and 3 respectively.
From this, we can see that there are numbers around 1, which are 2, 3, 4 and 6 respectively. Therefore, we can see that 2 and 3 may be in the lower left of the first picture. From the third picture, we can see that 3 and 4 are adjacent, so we can see that 3 should be on the lower side of the first picture and 2 should be on the left side of the first picture.
Existing: 4 and 2, 6 and 3, 1 and 5 are opposite.