#include <stdio.h>
int T,i,N,M,X,Y;
int main(){

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

    scanf( "%d" , &T);
    for( i = 1; i <= T ; i ++ ){

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

        if( N - X <= 4 || M - Y <= 4 || X <= 5 || Y <= 5 ){
            printf( "DA\n" );
        }
        else{
            printf( "NU\n" );
        }
    }
    return 0;
}