#include <cstdio>

int consecutive(char v[]);
int invers(char v[]);

int main() {
	int n, i, hour, minute;
	char c[4];

	scanf("%d\n", &n);

	for (i = 0; i < n; i++) {
		c[0] = getchar();
		hour = c[0] - '0';
		c[1] = getchar();
		hour = hour * 10 + c[1] - '0';

		getchar();

		c[2] = getchar();
		minute = c[2] - '0';
		c[3] = getchar();
		minute = minute * 10 + c[3] - '0';

		getchar();

		if (hour < 24 && minute < 60) {
			if (minute == 0 || hour == minute || consecutive(c) || invers(c))
				printf("DA");
			else
				printf("NU");
		}
		else
			printf("NU");

		printf("\n");
	}

	return 0;
}

int invers(char v[]) {
	if (v[0] == v[3] && v[1] == v[2])
		return 1;
	
	return 0;
}

int consecutive(char v[]) {
	int i, rez = 1;

	for (i = 0; i < 3; i++)
		if (v[i] + 1 != v[i + 1])
			rez = 0;

	return rez;
}