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

#define ll long long
#define rep(i, n) for (int i = 0; i < (n); i++)
#define P pair<int, int>

int main() {
  string s;
  cin >> s;
  rep(i,26) {
    if (s[i]-'a' != i) {
      char x = i+'a', y = s[i];
      cout << x << "to" << y << endl;
    }
  }


}