#include<stdio.h>

int main()
{
    int a, b;
    char word[10][10] = {"zero","one","two","three","four","five","six","seven","eight","nine"};
    
    scanf("%d", &a);
    scanf("%d", &b);
    
    for(int n=a;n<=b;n++)
    {
        if(n>=0 && n<=9)
            printf("%s\n",word[n]);
        else if(n % 2 == 0)
            printf("even\n");
        else
            printf("odd\n");
    }
    
    return 0;
}