#include <fstream>

using namespace std;

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

int check(int n, int m, int xx, int yy){
    if((xx - 1 <= 4 || n - xx <= 4) || (yy - 1 <= 4 || m - yy <= 4)){
        return 1;
    }
    return 0;
}

int main(){
    int tests; in>>tests; 
    for(; tests > 0; tests--){
        int n, m, xx, yy;
        in>>n>>m>>xx>>yy;

        out<<(check(n, m, xx, yy) ? "DA\n" : "NU\n");
    }
    return 0;
}