/*
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 */
package razvarov_harjutus7;

import java.util.Scanner;

/**
 *
 * @author AR
 */
public class Razvarov_harjutus7_2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        int i,n;
 Scanner scan = new Scanner(System.in);

    int a = scan.nextInt();
            int b = scan.nextInt();
    for (i=a; i<=b; i++) {
        n = i;
       System.out.printf("-> %d ", n);
        while (n != 1) {
            if (n%2 == 0)
                n = n / 2;
            else
                n = (n*3 + 1) / 2;
            System.out.printf("%d ", n);
        }
        System.out.printf("\n");
    }
}}