#include <iostream>

using namespace std;


signed main(){
    string s, cur;
    getline(cin,s);
    for(auto &i : s){
        if((i >= 'a' && i <= 'z') || (i >= 'A' && i <= 'Z'))
            cur += i;
        else{
            cout << cur << "\n";
            cur.clear();
        }
    }
    if(!cur.empty())
        cout << cur;
}