// #define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
int main() {
    // Input
    string S, T = "abcdefghijklmnopqrstuvwxyz";
    cin >> S;

    // Output
    rep(i, 26) if (S[i] != T[i]) cout << T[i] << "to" << S[i] << endl;
}