#include<stdio.h>
FILE*f = fopen("chatnoir.in", "r");
FILE*g = fopen("chatnoir.out", "w");
int t, x, y, n, m;
int main() {
	fscanf(f, "%d", &t);
	for (int i = 1; i <= t; ++i){
		fscanf(f, "%d%d%d%d", &n, &m, &x, &y);
		if (x<6 || y<6 || m - y<5 || n - x<5)
			fprintf(g, "DA\n");
		else
			fprintf(g, "NU\n");
	}



	fclose(g);
	fclose(f);
	return 0;
}