#include<cstdio>

using namespace std;

int t , n , m , x, y;

int main()
{
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	
	scanf("%d",&t);
	
	for ( ; t-- ; ) {
		
		scanf("%d %d %d %d",&n,&m,&x,&y);
		
		if ( x <= 5 || y <= 5 || (n - x) <= 4 || (m - y) <= 4 )
			printf("DA\n");
		else
			printf("NU\n");
	}
	
return 0;
}