#include <cstdio>

using namespace std;

FILE *f,*g;
long t,i;
int n,m,x,y,nr;

int main()
{
    f=fopen("chatnoir.in","r");
    g=fopen("chatnoir.out","w");
    fscanf(f,"%ld",&t);
    for (i=1;i<=t;i++)
    {
        fscanf(f,"%d%d%d%d",&n,&m,&x,&y);
        nr=x;
        if (y<nr) nr=y;
        if (n-x+1<nr) nr=n-x+1;
        if (m-y+1<nr) nr=n-y+1;
        if (nr<=5) fprintf(g,"DA\n");
            else fprintf(g,"NU\n");
    }
    fclose(f);fclose(g);
    return 0;
}