#include <bits/stdc++.h>

using namespace std;
typedef pair<int, int> Pair;

int main() {

    #ifndef ONLINE_JUDGE
    freopen("debug", "r", stdin);
    #endif // ONLINE_JUDGE

    char str[500000];
    cin.get(str, 500000);

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

    return 0;
}