#include<stdio.h>
int t , n , m , x , y;
int main()
{
    freopen("chatnoir.in" , "r" , stdin);
    freopen("chatnoir.out" , "w" , stdout);
    scanf("%ld" , &t);
    for (; t>0 ; --t)
    {
        scanf("%d %d %d %d" , &n , &m , &x , &y);
        if (x <= 5 || y <= 5 || x >= n-4 || y >= m-4)
            printf("DA\n");
        else
            printf("NU\n");
    }
}