#include <stdio.h>
int main(){
    int q, i, L, C, l, c;
    FILE *fin, *fout;
    fin=fopen("chatnoir.in", "r");
    fout=fopen("chatnoir.out", "w");
    fscanf(fin, "%d", &q);
    for(i=0; i<q; i++){
        fscanf(fin, "%d%d%d%d", &L, &C, &l, &c);
        if((L-l<4)||(l<4)||(C-c<4)||(c<4)){
            fprintf(fout, "DA\n");
        }else{
            fprintf(fout, "NU\n");
        }
    }
    fclose(fin);
    fclose(fout);
    return 0;
}