#include <cstdio>

using namespace std;

int main()
{
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    int t, m, n, x, y, dist=0;

    scanf("%d",&t);

    for(int i=1; i<=t; i++)
    {
        scanf("%d %d %d %d",&n,&m,&x,&y);
        dist = x-1;

        if(y-1 < dist)
            dist = y-1;
        if(n-x < dist)
            dist = n-x;
        if(m-y < dist)
            dist = m-y;

        if(dist <= 4)
            printf("DA\n");
        else
            printf("NU\n");
    }
    return 0;
}