11. (12 points) Fill in each blank with the numbers $1-4$, so that the numbers in each row and each column are not repeated. The numbers outside the table indicate the first odd or even number in that direction in the corresponding row or column. Therefore, the four-digit number formed by the numbers filled in the four cells of the third row from left to right is $\qquad$
【Answer】Solution: According to the problem,  
Based on the number pattern in the first row, we know that from left to right, 3 is before 1, 2 is before 4, the first position cannot be 1, and the second and fourth positions cannot be 2,  

Then, based on the numbers above being 3424, we can infer that the number 3124 is more likely to meet the conditions. The enumeration method can be used to eliminate other possibilities. Therefore, the answer is: 4213