#include <cstdio>

const int braille[][5] = {
	{1, 0, 0, 1, 0}, 
	{1, 1, 0, 2, 0}, 
	{2, 0, 0, 1, 1}, 
	{2, 1, 0, 1, 2}, 
	{1, 1, 0, 1, 1}, 
	{2, 1, 0, 2, 1}, 
	{2, 2, 0, 2, 2}, 
	{1, 2, 0, 2, 1}, 
	{1, 1, 0, 1, 1}, 
	{1, 2, 0, 1, 2}, 
	{1, 0, 1, 2, 0}, 
	{1, 1, 1, 3, 0}, 
	{2, 0, 1, 2, 1}, 
	{2, 1, 1, 2, 2}, 
	{1, 1, 1, 2, 1}, 
	{2, 1, 1, 3, 1}, 
	{2, 2, 1, 3, 2}, 
	{1, 2, 1, 3, 1}, 
	{1, 1, 1, 2, 1}, 
	{1, 2, 1, 2, 2}, 
	{1, 0, 2, 2, 1}, 
	{1, 1, 2, 3, 1}, 
	{1, 2, 1, 1, 3}, 
	{2, 0, 2, 2, 2}, 
	{2, 1, 2, 2, 3}, 
	{1, 1, 2, 2, 2}
};

int main (){
	int N, a, b, c, d, e;
	scanf("%d", &N);
	for (int i = 0; i < N; i++){
		scanf("%d %d %d %d %d", &a, &b, &c, &d, &e);
		int j = 0;
		while (true){
			if (a == braille[j][0] && b == braille[j][1] && c == braille[j][2] && d == braille[j][3] && e == braille[j][4])
				break;
			j++;
		}
		printf("%c", j + 'a');
	}
	printf("\n");
	return 0;
}