#include <iostream>
#include <vector>
#include <string>
#include <map>

using namespace std;

int main() {

    int Q, stop_count;
    cin >> Q;
    string command, bus, stop;

    map<string, vector<string>> buses, stops;

    for (int i = 0; i < Q; ++i) {

        cin >> command;

        if (command == "NEW_BUS"){

            cin >> bus >> stop_count;

            for (int j = 0; j < stop_count; ++j) {
                cin >> stop;
                buses[bus].push_back(stop);
                stops[stop].push_back(bus);
            }

            continue;
        };

        if (command == "BUSES_FOR_STOP"){

            cin >> stop;

            if (stops.count(stop) == 0){
                cout << "No stop" << endl;
            } else {
                for (auto x : stops[stop]){
                    cout << x << ' ';
                }
                cout << endl;
            }

        };

        if (command == "STOPS_FOR_BUS"){

            cin >> bus;

            if (buses.count(bus) == 0){
                cout << "No bus" << endl;
            } else{
                for (auto x : buses[bus]){
                    cout << "Stop " << x << ": ";
                    if (stops[x].size() != 1) {
                        for (auto y : stops[x]) {
                            if (y == bus) continue;
                            cout << y << " ";
                        }
                        cout << endl;
                    } else{
                        cout << "no interchange" << endl;
                    }

                }
            }

        };

        if (command == "ALL_BUSES"){

            if (!buses.empty()){
                for (auto x : buses){
                    cout << "Bus " << x.first << ": ";
                    for (auto y : x.second){
                        cout << y << " ";
                    }
                    cout << endl;
                }
            } else{
                cout << "No buses" << endl;
            }

        };


    }

    return 0;
}