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