#include<stdio.h>

int main() {
    int n,b;

    scanf("%d", &n);
    scanf("%d", &b);

    for (int i = n;i <= b; i++ ){
        printf((i==1)?"one": (i==2)?"two":(i==3)?"three"
        :(i==4)?"four":(i==5)?"five":(i==6)?"six"
        :(i==7)?"seven":(i==8)?"eight":(i==9)?"nine"
        : (i%2==0)?"even":"odd");
        printf("\n");
    }

    return 0;

}