#include<stdio.h>
int n,m,i,j,x,y,t; 
int main(){
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	scanf("%d",&t);
	for (i=1; i<=t; ++i){
		scanf("%d %d %d %d",&n,&m,&x,&y);
		if (x>=6 && x+5<=n && y>=6 && y+5<=m) printf("NU\n");
		else printf("DA\n");
	}
	return(0);
}