#include <stdio.h>

int min(int a, int b) {
    return (a < b) ? a : b;
}

int main() {
    FILE *fin, *fout;
    int t, n, m, x, y, i;

    fin = fopen("chatnoir.in", "r");
    fout = fopen("chatnoir.out", "w");
    fscanf(fin, "%d", &t);
    for (i = 1; i <= t; i++) {
        fscanf(fin, "%d%d%d%d", &n, &m, &x, &y);

        if (min(min(n - x, x - 1), min(m - y, y - 1)) <= 4) {
            fprintf(fout, "DA\n");
        } else {
            fprintf(fout, "NU\n");
        }
    }
    fclose(fin);
    fclose(fout);

    return 0;
}