#include <bits/stdc++.h>
#include <iostream>
#include <ctime>
using namespace std;
#define _LL long long
#define rep(i, n) for (_LL i = 0; i < (_LL)(n); i++)
#define vecrep(itr, v) for (auto itr = (v).begin(); itr != (v).end(); itr++)

int main()
{
    string s; cin >> s;
    rep(i, 26)
    {
        if( s[i] - 'a' !=  i )
        {
            cout << (char)('a' + i ) << "to" << s[i] << endl;
        }
    }
    return 0;    
}