#include <iostream>
#include <fstream>
using namespace std;
int main()
{int a,m,n,x,y,i,ok;
fstream f("chatnoir.in");
ofstream g("chatnoir.out");
f>>a;
for(i=1;i<=a;i++)
{
    ok=0;
    f>>m;
    f>>n;
    f>>x;
    f>>y;
    if(x-1<=x-m) m=1;
    if(y-1<=y-n) n=1;
    if(x=y-m-n<4) ok=1;
    if(ok=1) g<<"DA";
    else g<<"NU";
}
}