import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam;
import java.util.*;
import java.io.*;
public class RecycledNumbers{
    public static void main(String[] args) throws Exception
    {
        Scanner input = new Scanner(new File("C:\\temp\\C-large.in"));
        int T = input.nextInt();
        for (int t = 1; t <= T; t++)
        {
        int A = input.nextInt();
        int B = input.nextInt();
        double answer = 0;
        for (int a = A; a <= B; a++)
        {
            String aS = a + "";
            for (int i = aS.length(); i > 1; i--)
            {
                int max = Integer.parseInt(aS.substring(i-1) + aS.substring(0, i-1));
                if (max <= B && max >= A && max != a)
                {
                   answer++;
                }
            }
        }
        System.out.println("Case #" + t + ": " + (int)(answer/2));
    }
    }
    public static String reverse(String s, int i)
    {
        return (i < s.length()) ? s.charAt(s.length()-1-i) + reverse(s, i+1) : "";
    }
}
