/*
    How about a coding trick?

    Copyright by: EmanuelNrx
                  MihneaBoss
*/
#include <cstdio>
using namespace std;

int N, M, T, X, Y;

int main(){

    freopen("chatnoir.in" ,"r", stdin );
    freopen("chatnoir.out","w", stdout);

    scanf("%d", &T);

    for(T = T; T; T --){

        scanf("%d %d", &N, &M);
        scanf("%d %d", &X, &Y);

        if(X >= 6 && X <= N - 5)
        if(Y >= 6 && Y <= M - 5){
            printf("NU\n");
            continue;
        }

        printf("DA\n");
    }

    fclose(stdin );
    fclose(stdout);

    return 0;
}