#include <cstdio>
inline int getmin(int a,int b){
   if(a<b) return a;
   return b;
}
int main(){
   FILE*fi,*fout;
   int t,n,m,x,y;
   fi=fopen("chatnoir.in" ,"r");
   fout=fopen("chatnoir.out" ,"w");
   fscanf(fi,"%d " ,&t);
   while(t>0){
      t--;
      fscanf(fi,"%d %d %d %d " ,&n,&m,&x,&y);
      if(getmin(getmin(n-x,x-1),getmin(m-y,y-1))<4)
        fprintf(fout,"DA\n");
      else
        fprintf(fout,"NU\n");
   }
   fclose(fi);
   fclose(fout);
   return 0;
}