import java.util.*;
import java.io.*;
import java.math.BigInteger;

public class Main implements Runnable {
 private void solution() throws IOException {
  int n = 25;
  Random rm = new Random();
  for (int i = 0; i < n; ++i) {
   for (int j = 0; j < n - 1; ++j) {
    out.print((char) (rm.nextInt(26) + 'a'));
   }
   out.print("#");
   if (i != n - 1) {
    out.print(",");
   }
  }
 }