I have this problem abouth math pre algebra this is my problem

I have 3 number that makes a total of 11 I have 1
4
6=11 in each way has to came out 11 up down side across and I have 2 more blanck spaces total of 3 its big square need help and I cant use the same numbers over again ?

5 + 4 + 2 = 11
6 + 4 + 1 = 11
7 + 3 + 1 = 11
8 + 2 + 1 = 11

once u know which numbers show up most often u know which number goes in the center and then it should be really easy