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

}