#include<cstdio>
using namespace std;
int t, n, m, x, y;
int main()
{
FILE * fi = fopen("chatnoir.in","rt");
FILE * fo = fopen("chatnoir.out","wt");
    fscanf(fi,"%d",&t);
    while(t--)
    {
        fscanf(fi,"%d %d %d %d",&n,&m,&x,&y);
        if(x<=5||y<=5||x>=n-4||y>=m-4)
           fprintf (fo,"%s \n", "DA");
        else
           fprintf (fo,"%s \n", "NU");
    }
	fclose(stdout);
    return 0;
}