#include <cstdio>

using namespace std;

int main()
{
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    int a,n,m,l,c;
    scanf("%d",&a);
    for(int i=1;i<=a;i++)
    {
        scanf("%d%d%d%d",&n,&m,&l,&c);
        if(l<=5 || c<=5 || l>=n-4 || c>=m-4)
            printf("DA\n");
        else
            printf("NU\n");
    }
    return 0;
}