#include "bits/stdc++.h"

using namespace std;
using lint = int64_t;

int main(void) {
    cin.tie(nullptr)->sync_with_stdio(false);
    vector<string>t;
    string s;
    while(cin>>s) t.push_back(s);
    int n = (int)t.size();
    vector<bool>dot(n);
    map<string, int>id;
    vector<int>line_id(n);
    vector<int>v;
    for(int i=0;i<n;i++){
        bool ok = false;
        if(t[i].back() == '.'){
            dot[i] = 1;
            t[i].pop_back();
        }
        else if(t[i].back() == ','){
            ok = true;
            t[i].pop_back();
        }
        if(!id.count(t[i])){
            id[t[i]] = id.size();
        }
        line_id[i] = id[t[i]];
        if(ok) v.push_back(line_id[i]);
    }
    int m = (int)id.size();
    vector<vector<int>>g(m+m);
    vector<bool>vis(m+m);
    for(int i=1;i<n;i++){
        if(dot[i-1]) continue;
        int j = line_id[i-1], k = line_id[i];
        g[j].push_back(k+m);
        g[k+m].push_back(j);
    }
    auto dfs = [&](auto& self, int u)->void {
        vis[u] = 1;
        for(int v : g[u]){
            if(vis[v]) continue;
            self(self, v);
        }
    };
    for(int i : v){
        if(!vis[i]) dfs(dfs, i);
    }
    for(int i=0;i<n;i++){
        if(dot[i]){
            t[i] += '.';
            continue;
        }
        if(vis[line_id[i]]){
            t[i] += ',';
        }        
    }
    cout<<t[0];
    for(int i=1;i<n;i++) cout<<" "<<t[i];
    cout<<"\n";


    return 0;
}