#include <iostream>
#include <string.h>
using namespace std;

int main()
{
    char a[105];
    cin.getline(a,sizeof (a));
    int n = strlen(a);
    for(int i=0; i<n ;++i)
    {
        if(a[i] == '.' || a[i] == '-')
            cout<<"";
        else
        if(a[i] == ',')
            cout<<" , ";
        else
            cout<<a[i];
    }

    return 0;
}