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

bool sushu(int n){
	for(int i = 2;i <= sqrt(n);i++){
		if(n % i == 0) return false;
	}
	
	if(n == 1) return false;
	return true;
}

int main(){
	for(int i = 1;i <= 200;i++){
		if(sushu(i)){
			if(i >= 65 && i <= 65 + 25 || i >= 97 && i <= 122){
				cout<<i<<" "<<(char)i<<endl;
			}
		}
	}
}


/**************************************************************
	Problem: 1972
	User: admin
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/