#include <iostream>
    #include <unordered_map>
    #include <vector>
    using namespace std;

    int main()
    {

        vector<char> arr;
        vector<char> arr2;
        char input;
        while (input != '.')
        {
            cin >> input;
            if (input == '.')
            {
                break;
                }
            arr.push_back(input);
        }

        //abab1bca98abab1. size = 15
        int size = arr.size() / 5; // ==3
        int five = arr.size() / size; // == 5
        // cout << size << '\n';
        // cout << five << '\n';


       /*here i want to print every 5th part o the input
        for example from this  abab1bca98abab1. i want to print
        abab1
        bca98
        abab1
        */
        for (int i = 0; i < arr.size();)
        {
            for (int j = 0; j < 5;)
            {
                cout << arr[j];
                 j++;
            }
            i += 5;

            cout << '\n';
        }


            return 0;
    }