#include <stdio.h>

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

    fin = fopen( "chatnoir.in", "r" );
    fout = fopen( "chatnoir.out", "w" );

    fscanf( fin, "%d", &t );
    while ( t-- ) {
        fscanf( fin, "%d%d%d%d", &n, &m, &x, &y );

        if ( x + 4 >= n || y + 4 >= m || x - 4 <= 1 || y - 4 <= 1 )
            fprintf( fout, "DA\n" );
        else
            fprintf( fout, "NU\n" );
    }

    fclose( fin );
    fclose( fout );

    return 0;
}