7. We have 9 numbers: $-6,-4,-2,-1,1,2,3,4,6$. It is known that the sum of some of these numbers is -8. Write down these numbers.
7. These numbers can be:
1) $-6,-2 ; 2)-6,-2,-1,1 ; 3)-6,-2,-4,4$;
2) $-6,-2,-1,1,4,-4 ; 5)-6,-4,2$;
3) $-6,-4,2,-1,1 ; 7)-6,-4,-2,-1,2,3$.