#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    char c[200];
    cin.get(c,200);
    for(int i=0;i<=strlen(c);++i)
    {
        if(c[i] == ',')cout<<" ,";
        else if (c[i] == '-' || c[i] == '.')cout<<"";
        else cout<<c[i];
    }
    return 0;
}