#include <cstdio>

int main (void)
{
	std::freopen("chatnoir.in","r",stdin);
	std::freopen("chatnoir.out","w",stdout);
	unsigned int t;
	std::scanf("%u",&t);
	unsigned short n, m, x, y, *n_ptr(&n), *m_ptr(&m), *x_ptr(&x), *y_ptr(&y);
	do
	{
		std::scanf("%hu%hu%hu%hu",n_ptr,m_ptr,x_ptr,y_ptr);
		if (x < 5 || y < 5 || n - x < 5 || m - y < 5)
			std::printf("DA");
		else
			std::printf("NU");
		std::putchar('\n');
		--t;
	}
	while (t);
	std::fclose(stdin);
	std::fclose(stdout);
	return 0;
}