# include <iostream>
# include <cstring>
using namespace std;
int main()
{
    char l[101],r[101];//,p[101];
    int i,j;
    cin.getline(l,101);
    i=0;
    j=0;
    while (i<strlen(l))
    {
        if (l[i]==',')
        {
            r[j]=' ';
            j++;
            r[j]=',';
            j++;
            i++;
        }
        else if (l[i]=='.')
            i=i+1;
        else if (l[i]=='-')
            i=i+1;
        else
        {
            r[j]=l[i];
            i++;
            j++;
        }
    }
    j--;
    for (i=0;i<=j;i++)
        cout<<r[i];
    return 0;
}