#include<stdio.h>

int verif(int N,int M,int x,int y)
{
    if(N-x<=2)
        return 1;
    if(x-1<=1)
        return 1;
    if(M-y<=2)
        return 1;
    if(y-1<=1)
        return 1;
    return 0;
}
int N;
int X,Y,x,y;
int main()
{
freopen("chatnoir.in","r",stdin);
freopen("chatnoir.out","w",stdout);
    scanf("%d",&N);
    for(int i=1;i<=N;++i)
    {
        scanf("%d%d%d%d",&X,&Y,&x,&y);
        if(verif(X,Y,x,y))
            printf("DA\n");
            else printf("NU\n");
    }
}