#include <stdio.h>

using namespace std;

int main()
{
    FILE*f = fopen("chatnoir.in","r");
    int p,n,m,x,y;
    fscanf(f,"%d",&p);
    FILE*g = fopen("chatnoir.out","w");
    while(p--)
    {
        fscanf(f,"%d%d%d%d",&n,&m,&x,&y);
        if(x-1>=3 && n-x>=3 && y-1>=3 && m-y>=3)
            fprintf(g,"NU\n");
        else
            fprintf(g,"DA\n");
    }
    fclose(f);
    fclose(g);
    return 0;
}