#include <stdio.h>
#include <stdlib.h>
#define in "chatnoir.in"
#define out "chatnoir.out"
int k,i,n,m,x,y;
int main(){
    freopen(in, "r", stdin);
    freopen(out, "w", stdout);
    scanf("%d",&k);
    for( i = 1; i <= k ; i ++ ){
        scanf("%d%d%d%d",&n, &m ,&x, &y);
        if( n-x <= 4 || m-y <= 4 || x <= 4 || y <= 4 )
           printf("DA\n");
        else
             printf("NU\n");
    }
    return 0;
}