#include<stdio.h>

FILE*f=fopen("chatnoir.in","r");
FILE*g=fopen("chatnoir.out","w");

int n,m,i,x,y,q;

int main () {
	
	fscanf(f,"%d",&q);
	
	for ( i = 1 ; i <= q ; ++i ){
		fscanf(f,"%d %d %d %d",&n,&m,&x,&y);
		if ( x <= 3 || y <= 3 || n - x <= 2 || m - y <= 2 ){
			fprintf(g,"DA\n");
		}
		else{
			fprintf(g,"NU\n");
		}
	}
	
	fclose(f);
	fclose(g);
	
	return 0;
}