#include <iostream>
using namespace std;

int main() {
    int a, b;
    cin >> a;
    cin >> b;
    string num[] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "even", "odd"};
    int i =0;  
    for (i=a; i<=b; i++){
        if (i<=9)         
            cout <<num[i]<< endl;
        else if ( (i>9) && (i%2)==0)
            cout << "even" << endl;
        else if ( (i>9) && (i%2)==1)
            cout << "odd" << endl;
    } 
    return 0;
}