#include<stdio.h>

int a,n,m,x,y;
int main()
{
	freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
	scanf("%d",&a);
	while(a)
	{
		a--;
		scanf("%d%d%d%d",&n,&m,&x,&y);
		if(x-1<=4 || y-1<=4 || n-4<=x || m-4<=y) printf("DA\n");
			else printf("NU\n");
	}
	return 0;
}