#include <cstdio>
#include <algorithm>
using namespace std;

#define inf 0x3f3f3f3f

FILE *f = fopen ( "chatnoir.in", "r" );
FILE *g = fopen ( "chatnoir.out", "w" );

int main(){

    int T, N, M, x, y;

    fscanf ( f, "%d", &T );

    for ( ; T; --T ){
        int val = inf;
        fscanf ( f, "%d%d%d%d", &N, &M, &x, &y );

        val = min ( val , min ( x - 1, N - x ) );
        val = min ( val , min ( y - 1, M - y ) );

        if ( val > 4 )
            fprintf ( g, "NU\n" );
        else
            fprintf ( g, "DA\n" );
    }

    return 0;
}