/*  I am sharing my solution to this challenge. Any comments are welcome, as they help me improve. Thank you. */

#include <stdio.h>

int main() {
    int a, b;
    scanf("%d\n%d", &a, &b);
    
    for (short i = a; i <= b; i++) {
        
        switch (i) {
            case 1:
                printf("one\n");
                break;
            case 2:
                printf("two\n");
                break;
            case 3:
                printf("three\n");
                break;
            case 4:
                printf("four\n");
                break;
            case 5:
                printf("five\n");
                break;
            case 6:
                printf("six\n");
                break;
            case 7:
                printf("seven\n");
                break;
            case 8:
                printf("eight\n");
                break;
            case 9:
                printf("nine\n");
                break;
            default:
                if (i % 2 == 0) {
                    printf("even\n");
                } else {
                    printf("odd\n");
                }
                break;
        }
    }

    return 0;
}