#include <cstdio>

int T, N, M, X, Y, Min;

inline int MIN( int x, int y )
{
	return ( x < y ) ? x : y;
}

int main()
{
	freopen("chatnoir.in", "r", stdin);
	freopen("chatnoir.out", "w", stdout);
	
	scanf("%d", &T);
	for( ; T; T-- )
	{
		scanf("%d%d%d%d", &N, &M, &X, &Y);
		
		Min = 1<<30;
		Min = MIN( Min, X-1 );
		Min = MIN( Min, Y-1 );
		Min = MIN( Min, N-X );
		Min = MIN( Min, M-Y );
		
		if( Min > 4 ) printf("NU\n");
		else printf("DA\n");
	}
	
	return 0;
}