Add element inside cell with combination

I have a cell A.

A = {[],[1,2],[3,4],[5,6]}

I want to add each element inside the cell A in a combination.

This is the result I want

1+3+5 ---> 9
1+3+6 ---> 10
1+4+5 ---> 10
1+4+6 ---> 11
2+3+5 ---> 10
2+3+6 ---> 11
2+4+5 ---> 11
2+4+6 ---> 12
result = [9;10;10;11;10;11;11;12]

Answer 1

[KSSV]

A = {[],[1,2],[3,4],[5,6]} ;
A = A(~cellfun('isempty',A)) ;  % REmove empty cells 

[I{1:numel(A)}] = ndgrid(A{:}) ;
thesum = I{1} ;
for i = 2:numel(A)
    thesum = thesum+I{i} ;
end
iwant = thesum(:)

iwant = 8×1

9 10 10 11 10 11 11 12

Answer 2

[David Hill]

[a,b,c]=meshgrid(A{2},A{3},A{4});
s=sum([a(:),b(:),c(:)],2);

[NA]

Thank you for your time.