#include <iostream>


void get_combo(int n, const std::string& str, std::string prefix, std::string* arr) {
    if (n == str.size()) {
        std::cout << prefix << " ";
        return;
    }
    for (int i = 0; i < arr[str[n] - '2'].size(); i++) {
        get_combo(n + 1, str, prefix + arr[str[n] - '2'][i], arr);
    }
}

int main() {

    std::string arr[8]{ "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz" };

    std::string str;

    std::cin >> str;

    get_combo(0, str, "", arr);
}