#include<fstream>
using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int k,i,n,m,x,y;
int main(){
    in >> k;
    for( i = 1; i <= k ; i ++ ){
        in >> n >> m >> x >> y;
        if( n-x+1 <= 4 || m -y +1 <= 4 || x <= 5 || y <= 5 ){
            out<<"DA"<<"\n";
        }
        else{
            out<<"NU"<<"\n";
        }
    }
    return 0;
}