159112

1)odd+odd+even=even odd+even+even=odd
even+even=even=even odd+odd+odd=odd
2)there are three odd and five even and two of three odd are together,so if the sum for each side is odd, each side need at least one odd.Because two of three odd are together ,it is not possible.So sum for each side is even.
3)Because two of three odd are together,another odd must line with two odd,and one of two odd must in the second place in either side.