#include <bits/stdc++.h>
using namespace std;

char ss[][6]={
"10010",
"11020",
"20011",
"21012",
"11011",
"21021",
"22022",
"12021",
"11011",
"12012",
"10120",
"11130",
"20121",
"21122",
"11121",
"21131",
"22132",
"12131",
"11121",
"12122",
"10221",
"11231",
"12113",
"20222",
"21223",
"11222"};

int main()
{
	int n; scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		int a, b, c, d, e;
		scanf("%d%d%d%d%d", &a, &b, &c, &d, &e);
		char sb[] = {(char)(a + 48), (char)(b + 48), (char)(c + 48), (char)(d + 48), (char)(e + 48), 0};
		for (int j = 0; j < 26; j++)
		{
			if (strcmp(sb, ss[j]) == 0) { printf("%c", j + 97); break; }
		}
	}
	return 0;
}

