#include <iostream>
using namespace std;

int main() {
	for(int i=0;i<10000;i++){
		for(int o=0;o<100;o++){
			for(int u=0;u<1000;u++){
				cout<<(char)i<<(char)o<<(char)u<<(char)i+1<<(char)o+1<<(char)u+1<<endl<<(char)i<<(char)o<<(char)u<<(char)i+1<<(char)o+1<<(char)u+1<<endl;
			}
		}
	}

	return 0;
}