#include <string>
#include <iostream>
#include <sstream>

using namespace std;

class Node
{
    public:
    string key;
    string line;
    Node *LChild;
    Node *RChild;

    Node(string key, string line)
    {
        this->key=key;
    this->line=line;
        LChild=NULL;
        RChild=NULL;
    }
};

class Tree
{
public:
    Node *root;

    Tree(){
        root=NULL;
    }

    void Add(Node* x, string key, string line){
      //Node* n = new Node(key, line);
      if(root=NULL){
    Node* n = new Node(key, line);
    root = n;
      } else {
    if(key.compare(x->key) == 0){
      x->line = x->line + " " + line;
      //delete n;
    } else if(key.compare(x->key) <0){ //idziemy na lewo
      if(x->LChild == NULL){
        Node* n = new Node(key, line);
        x->LChild = n;
      } else {
        Add(x->LChild, key, line);
      }
    } else {
      if(x->RChild == NULL){
        Node* n = new Node(key, line);
        x->RChild = n;
      } else {
        Add(x->RChild, key, line);
      }
    }
      }

    }

    void InOrder(Node* x)
    {
        if(x->LChild!=NULL)
        {
            InOrder(x->LChild);
        }
            cout<<x->key<< " => "<<endl;

            if(x->RChild!=NULL)
        {
            InOrder(x->RChild);
        }

    }
};

int main()
{
    int nl;
    string line = NULL;
    string key = NULL;
    Tree* tree = new Tree();
    cin>> nl;
    for(int i = nl; i>0; --i){
      cin>> line;
      stringstream j;
      j << line;
      int k;
      j >> k;
      for(k; k>0; --k){
    cin>> key;
    tree->Add(tree->root, key, line);
      }
    }

    tree->InOrder(tree->root);

    return 0;
}