#include <fstream>

using namespace std;

ifstream fin("chatnoir.in");
ofstream fout("chatnoir.out");

int main(){
    int t;
    fin >> t;
    for(int i=1;i<=t;i++){
        int n,m,x,y;
        fin >> n >> m >> x >> y;
        if(min(min(n-x,x-1),min(m-y,y-1))<=4){
            fout << "DA\n";
        }else{
            fout << "NU\n";
        }
    }
    return 0;
}