#include<fstream>
#include<iostream>
#include<vector>
#include <string>
using namespace std;
ifstream fin("text.in");
ofstream fout("text.out");

int n,m,k,i,j,p,x,y,a[1005][1005],t;
string s;



int main()
{
    getline(cin,s);
    n=s.length();
    for(i=0;i<n;i++)
    {
        if(s[i]!='.' and s[i]!='-' )
        {
            if(s[i]==',')
            {
                cout<<" "<<s[i];
            }
            else cout<<s[i];
        }
    }


}