#include <iostream>
#include <vector>
#include <fstream>


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

int main() {
    setlocale(LC_ALL, "ru");

    std::vector<std::string> arr{ "abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz" };

    std::string str;

    std::cin >> str;

    get_combo(str, arr);
}