#include <iostream>
#include <cstring>
using namespace std;

int main ()
{
    char c[105];
    cin.getline(c, 105);
    for (int i = 0; c[i] != 0; ++i){
        if (c[i] == ','){
            cout << " ,";
        }
        else
        if (c[i] != '-' && c[i] != '.'){
            cout << c[i];
        }
    }

    return 0;
}