#include <algorithm>
#include <cmath>
#include <cstdio>
#include <deque>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <vector>

using namespace std;

typedef long long ll;

#define MOD 1000000007

int main() {
  string p = "abcdefghijklmnopqrstuvwxyz";
  string s;
  cin >> s;
  for (int i = 0; i < 26; ++i) {
    if (p[i] != s[i]) {
      cout << p[i] << "to" << s[i] << endl;
    }
  }
  return 0;
}