#include<bits/stdc++.h>
using namespace std;
int c;
int main()
{
	while(scanf("%d",&c)!=EOF)
	{
		for(int i=1;i<=c;i++)
		{
			printf("琼A·D");
			int num1=rand()%10+1;
			if(num1%2)
			{
				int num2=rand()%9+1;
				printf("%c",(char)(num2+47));
			}
			else
			{
				int num2=rand()%25+1;
				printf("%c",(char)(num2+64));
			}
			for(int j=1;j<=4;j++)
			{
				int num2=rand()%9+1;
				printf("%c",(char)(num2+47));
			}
			puts("");
		}
		puts("");
	}
	return 0;
}