#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <climits>
#include <cstring>
#include <cassert>


using namespace std;
#define SZ(x) (int)(x.size())
#define REP(i, n) for(int i=0;i<n;++i)
#define FOR(i, a, b) for(int i=a;i<b;++i)
#define RREP(i, n) for(int i=n-1;i>=0;--i)
#define RFOR(i, a, b) for(int i=b-1;i>=a;--i)

#define all(x) begin(x),end(x)
#define dump(x) cerr<<#x<<" = "<<(x)<<endl
#define debug(x) cerr<<#x<<" = "<<(x)<<" (L"<<__LINE__<<")"<< endl;

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using P = pair<int, int>;
const double eps = 1e-8;
const ll MOD = 1000000007;
const int INF = INT_MAX / 2;
const ll LINF = LLONG_MAX / 2;

template<class T>
bool chmax(T &a, const T &b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

template<class T>
bool chmin(T &a, const T &b) {
    if (b < a) {
        a = b;
        return true;
    }
    return false;
}


template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2> p) {
    os << p.first << ":" << p.second;
    return os;
}

template<class T>
ostream &operator<<(ostream &os, const vector<T> &v) {
    os << "[";
    REP(i, SZ(v)) {
        if (i) os << ", ";
        os << v[i];
    }
    return os << "]";
}

template<class T1, class T2>
ostream &operator<<(ostream &os, const map<T1, T2> &mp) {
    os << "[";
    for (auto it = mp.begin(); it != mp.end(); ++it) {
        if (it != mp.begin()) {
            os << ", ";
        }
        os << *it;
    }
    return os << "]";
}

// edit

string conv(string s) {
    for (char c = 'b'; c <= 'z'; c++) {
        for (int i = 0; i < s.size(); ++i) {
            if (s[i] == c) {
                s[i]--;
                break;
            }
        }
    }

    return s;
}

bool solve() {
    string s;
    cin >> s;
    if (s == "#") return false;

    int n = s.size();

    vector<string> vec;
    vec.push_back(s);

    for (char c = 'y'; c >= 'a'; c--) {
        char nc = c;
        nc++;
        vector<string> nvec;
        for (auto str : vec) {
            bool f = true;
            for (auto c : str) {
                if (c == nc) {
                    f = false;
                }
            }
            if (f) {
                nvec.push_back(str);
            }

            int ncidx = n;
            for (int i = 0; i < str.size(); ++i) {
                if (str[i] == ncidx) {
                    ncidx = i;
                    break;
                }
            }

            for (int i = 0; i < ncidx; ++i) {
                if (str[i] == c) {
                    string t = str;
                    t[i]++;
                    nvec.push_back(t);
                }
            }

//            bool change = false;
//            for (int i = 0; i < str.size(); ++i) {
//                if (str[i] == c) {
//                    str[i]++;
//                    change = true;
//                    break;
//                }
//            }
//            if (change) {
//                nvec.push_back(str);
//            }
        }

        swap(vec, nvec);
    }


    vector<string> ans;
    for (auto str : vec) {
        if (conv(str) == s) {
            ans.push_back(str);
        }
    }

    cout << ans.size() << endl;
    sort(all(ans));
    if (ans.size() <= 10) {
        for (auto e : ans) {
            cout << e << endl;
        }
    } else {
        vector<string> pre(ans.begin(), ans.begin() + 5);
        vector<string> suf(ans.end() - 5, ans.end());
        for (auto e : pre) {
            cout << e << endl;
        }
        for (auto e : suf) {
            cout << e << endl;
        }
    }


    return true;
}


int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    cout << fixed << setprecision(10);
//    std::ifstream in("input.txt");
//    std::cin.rdbuf(in.rdbuf());


    while (solve());


    return 0;
}



Measured memory_bytes: 5068