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#include "bits/stdc++.h"
// @JASPER'S BOILERPLATE
using namespace std;
using ll = long long;
#define FOR(i, a, b) for(int i = a; i <= b; i++)
#define FORD(i, a, b) for(int i = a; i >= b; i--)
#define REP(i, b) for(int i = 0; i < b; i++)
#define PER(i, b) for(int i = b - 1; i >= 0; i--)
#define fi first
#define se second
#ifdef JASPER2
#include "debug.h"
#else
#define debug(...) 166
#endif

// #define int long long
using pii = pair < int, int >;
const int INF = 1e9;
const ll MOD = 998244353;
const int N = 2e5 + 5;

string s;
map <char, string> mp;
int n;
vector <string> ans;

void solve(int i, string cur) {
    if (i == n) {
        ans.push_back(cur);
        return;
    }

    for (auto x : mp[s[i]])
        solve(i + 1, cur + x);
}

void run_case() {
    cin >> s;
    sort(s.begin(), s.end());
    n = s.size();

    mp['2'] = "abc";
    mp['3'] = "def";
    mp['4'] = "ghi";
    mp['5'] = "jkl";
    mp['6'] = "mno";
    mp['7'] = "pqrs";
    mp['8'] = "tuv";
    mp['9'] = "wxyz";
       
    solve(0, "");
    sort(ans.begin(), ans.end());
    for (auto x : ans) cout << x << " ";

}

signed main() {
    cin.tie(0) -> sync_with_stdio(0);
    #ifdef JASPER2
        freopen("in1", "r", stdin);
    #endif

    int Test = 1;
    // cin >> Test;
    for (int test = 1; test <= Test; test++){

        run_case();
    }
}