#include <fstream>

using namespace std;
ifstream in("chatnoir.in");
ofstream out("chatnoir.out");
int main()
{int t,n,m,x,y,mini,i;
in>>t;
for(i=1;i<=t;i++)
{
    in>>n>>m>>x>>y;
    mini=x-1;
    if(mini>n-x) mini=n-x;
    if(mini>y-1) mini=y-1;
    if(mini>m-y) mini=m-y;
    if(mini<5)
        out<<"DA"<<'\n';
    else
        out<<"NU"<<'\n';
}
    return 0;
}