#include <stdio.h>

int main(){

FILE *file1, *file2;
int T, N, M, X, Y;

file1 = fopen("chatnoir.in", "r");
file2 = fopen("chatnoir.out", "w");

fscanf(file1, "%d", &T);

while(T--){
    fscanf(file1, "%d %d %d %d", &N, &M, &X, &Y);
    if(N-X<=4 || M-Y<=4)
        fprintf(file2, "DA\n");
    else
        fprintf(file2, "NU\n");
}
return 0;
}