#include<iostream>
using namespace std;
long long n,x,k,c,i;
char cc;
int main(){
	cin>>n;
	for(i=1;i<=n;i++){
		cin>>cc>>x>>k;
		c=cc-97;
		c=c+k*x;
		c%=26;
		cout<<(char)(c+'a')<<"\n";
	}
}