#include <bits/stdc++.h>
using namespace std;

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

    int n = line.size();
    string tmp = "";

    for(int i = 0; i < n; ++i) {
        if(line[i] == '.' || line[i] == '-')
            continue;
        if(line[i] == ',')
            tmp += ' ';
        tmp += line[i];
    }

    cout << tmp << "\n";
}