text: // https://www.hackerrank.com/challenges/c-tutorial-for-loop/problem
  
  #include <iostream>
  #include <cstdio>
  using namespace std;
  
  int main() {
      // Complete the code.
      const char *digits[] = { "", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine" };
      int n1, n2;
      cin >> n1 >> n2;
      for (int n = n1; n <= n2; ++n) {
          if (n < 1) {
              // rien
          }
          else if (n <= 9) cout << digits[n] << endl;
          else if (n % 2 == 0)
              cout << "even" << endl;
          else
              cout << "odd" << endl;
      }
      return 0;
  }
  
  