#include <iostream>
#include <string>

using namespace std;

int main()
{
    string x;
    getline(cin, x);

    for (auto it: x)
        if (it == '.' || it == '-')
            ;
        else if (it == ',')
            cout << " ,";
        else
            cout << it;
    cout << '\n';

    return 0;
}