#include<bits/stdc++.h>
using namespace std;
vector<int>v[1010];
int n,r,x;
int main(){
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>r;
		for(int j=0;j<r;j++){
			cin>>x;
			v[i].push_back(x);
		}
		sort(v[i].begin(),v[i].end());
	}
	sort(v,v+n);
	for(int i=0;i<n;i++){
		for(int j=0;j<v[i].size();j++){
			cout<<v[i][j]<<" ";
		}
		cout<<endl;
	}
	return 0;
} 

#include<bits/stdc++.h>
using namespace std;
vector<int>v[8848];
int n,a,b;
int main(){
cin>>n;
for(int i=0;i<n;i++){
	cin>>a;
	for(int j=0;j<a;j++){
		cin>>b;
		v[i].push_back(b);
	}
	sort(v[i].begin(),v[i].end());
  }	
  sort(v,v+n);
  for(int i=0;i<n;i++){
  	for(int j=0;j<v[i].size();j++){
  		cout<<v[i][j]<<" ";
	  }
	  cout<<endl;
  }
  return 0;
}