#include<cstdio>
using namespace std;
int main()
{
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	int m,n,x,y,t,i,ok;
	scanf("%d",&t);
	for(i=1;i<=t;i++)
	{
		ok=0;
		scanf("%d%d%d%d",&n,&m,&x,&y);
		if(x<=4||y<=4||n-x<=4||m-y<=4)ok=1;
		if(ok)printf("DA\n");
		else printf("NU\n");
	}
	return 0;
}