//  Creating Strings

#include<bits/stdc++.h>

using namespace std;

int main() {
    set<string> combinations;
    string s;
    cin >> s;
    sort(s.begin(), s.end());
    do {
        combinations.insert(s);
    } while (next_permutation(s.begin(), s.end()));
    combinations.insert(s);
    cout << combinations.size() << endl;
    for(auto p: combinations) {
        cout << p << endl;
    }
    return 0;
}