#include<cstdio>

int n,m,x,y;

void test()
{
	scanf("%d%d%d%d",&n,&m,&x,&y);
	if((x<=5)||(x>=n-4)||(y<=5)||(y>=m-4))
		printf("DA\n");
	else printf("NU\n");
}

int main()
{
	int t,tt;
	
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	
	scanf("%d",&t);
	for(tt=1;tt<=t;tt++)
		test();
	
	return 0;
}