#include <stdio.h>

int main()
{
    int t=0,i=0,n=0,m=0,x=0,y=0;
    freopen("chatnoir.in","r",stdin);
    freopen("chatnoir.out","w",stdout);
    scanf("%d",&t);
    for (i=0; i<t; ++i)
    {
        scanf("%d%d%d%d",&n,&m,&x,&y);
        if (n-x<=8 || 9>=x || m-y<=8 || 9>=y) printf("DA");
        else printf("NU");
    }
    return 0;
}