#include <iostream>
#include <string>
#include <algorithm>

using namespace std;

int main() {
    string s;
    getline(cin, s);
    string ans;
    for(int i = 0; i < s.size(); ++i) {
        if(s[i] == '-' || s[i] == '.')
            continue;
        if(s[i] == ',')
            ans += " ";
        ans += s[i];
    }
    cout << ans;
    return 0;
}