#include<iostream>
using namespace std;
int main()
{
	int c,a[100],n,i,x,g;
	cin>>n;
	for(i=1;i<=n;i++)
		cin>>a[i];
	for(c=1;c<=9;c++)
	{   
		g=0;
		for(i=1;i<=n;i++)
		{
			x=a[i];
			while(x>9) x=x/10;
			if(x==c) { cout<<a[i]<<" "; 
			           g=1;
			}
		}
		if(g==1) cout<<endl;
	}
	return 0;
}