#include <bits/stdc++.h>
using namespace std;
vector<int> a[1010];
int n;
int main(){
	int i,x,k,j;
	cin>>n;
	for(i = 0;i < n;i++){
		cin>>x;//每个数组有x个数
		for(j = 0;j < x;j++){
			cin>>k;
			a[i].push_back(k);
		} 
	}
	
	//对每个数组排序
	for(i = 0;i < n;i++){
		sort(a[i].begin(),a[i].end());
	} 
	
	sort(a,a+n);
	
	for(i = 0;i < n;i++){
		for(j = 0;j < a[i].size();j++){
			cout<<a[i][j]<<" ";
		}
		cout<<endl;
	}
}

/**************************************************************
	Problem: 1503
	User: admin
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2104 kb
****************************************************************/