#include <iostream>
#include <cstring>

using namespace std;

int main()
{
    char v[101];

    cin.getline(v,101);
    for(int i=0; i<strlen(v); i++)
    {
        if ((v[i]>='A' && v[i]<='Z') || (v[i]>='a' && v[i]<='z') || v[i]==' '|| v[i]=='"')
            cout << v[i];
        else if (v[i]==',')
            cout <<" "<<v[i];
        else
            strcpy(v+i, v+i);
    }
    return 0;
}