#include<stdio.h>
int i,m,n,x,y;
int main()
{
	freopen("chatnoir.in","r",stdin);
	freopen("chatnoir.out","w",stdout);
	scanf("%d",&i);
	while(i)
	{
		scanf("%d%d%d%d",&n,&m,&x,&y);
		if(x<6||x>n-5||y<6|| y>m-5) printf("DA\n");
		else printf("NU\n");
		--i;
	}
	return 0;
}