9. (12 points) Five students, Jia, Yi, Bing, Ding, and Wu, ranked in the top 5 (no ties) in a math competition and stood in a row for a photo. They each said the following:

Jia said: The two students next to me have ranks that are both behind mine;
Yi said: The two students next to me have ranks that are adjacent to mine;
Bing said: All the students to my right (at least 1) have ranks that are ahead of mine;
Ding said: All the students to my left (at least 1) have ranks that are behind mine;
Wu said: I am standing in the second position from the right.

Given that they are all honest children, Jia, Yi, Bing, Ding, and Wu received ranks $A$, $B$, $C$, $D$, and $E$ respectively. What is the five-digit number $\overline{\mathrm{ABCDE}}$? $\qquad$
【Solution】Solution: According to the analysis, based on what A and B said, we know that neither A nor B is at the far left or the far right; according to what Wu said, Wu is also not at the far left or the far right, so the ones at the far left and the far right must be C and D; combining what C and D said, we know that the one standing at the far left is C, and the one at the far right is D;

At this point, the order from left to right that can be determined is: C A B Wu D, or C B A Wu D; from what C and D said, we know that C is the last, which is the 5th, and D is the first, if the order is: C B A Wu D, from what B said, B can only be the 4th, and A can only be the 3rd, the remaining Wu is the 2nd, which clearly contradicts what A said, so it is excluded; therefore, the order can only be: C A B Wu D, at this time C is 5th, A is 2nd, B is 3rd, Wu is 4th, D is 1st,
$A, B, C, D, E$ are: $2, 3, 5, 1, 4$, the five-digit number $\overline{\mathrm{ABCDE}}=23514$,

Therefore, the answer is: 23514.