#include <bits/stdc++.h>

using namespace std;

int main(){
    /*#ifndef ONLINE_JUDGE
    freopen("debug.in", "r", stdin);
    #endif // ONLINE_JUDGE*/

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