#include <iostream>
#include <string>

using namespace std;

const int NMAX = 100;

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