#include<stdio.h>



int n,t,x,y,m,a,b;

int main()
{
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	scanf("%d",&t);
	for(int i=1;i<=t;i++)
	{
		scanf("%d %d %d %d",&n,&m,&x,&y);
		if(n-x<5 || m-y <5) printf("DA\n");
		else printf("NU\n");
	}
}