#include<stdio.h> //a=97 z=12
#include<string.h>
int main()
{
int n;
char m[205];
int i,j;
int a;
scanf("%d",&n);
getchar();
while(n--)
{
a=0;
gets(m);
j=strlen(m);
for(i=0;i<j;i++)
{
if(m[i]>=97&&m[i]<=122)
{
a++;
}
}
a=a%26;
switch(a)
{
case 0:printf("z");break;
case 1:printf("a");break;
case 2:printf("b");break;
case 3:printf("c");break;
case 4:printf("d");break;
case 5:printf("e");break;
case 6:printf("f");break;
case 7:printf("g");break;
case 8:printf("h");break;
case 9:printf("i");break;
case 10:printf("j");break;
case 11:printf("k");break;
case 12:printf("l");break;
case 13:printf("m");break;
case 14:printf("n");break;
case 15:printf("o");break;
case 16:printf("p");break;
case 17:printf("q");break;
case 18:printf("r");break;
case 19:printf("s");break;
case 20:printf("t");break;
case 21:printf("u");break;
case 22:printf("v");break;
case 23:printf("w");break;
case 24:printf("x");break;
case 25:printf("y");break;
