#include<stdio.h>
int i,t,n,m,x,y;
int main()
{
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    scanf("%d",&t);
    for(i=1;i<=t;i++)
    {
        scanf("%d%d%d%d",&n,&m,&x,&y);
        if(x<=4||y<=4||x+4>=n||y+4>=m)
            printf("DA\n");
        else 
            printf("NU\n");
            
    }
    return 0;

}