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);

			}
		}

	}
}

/*
ID: lovelacer
LANG: JAVA
PROG: candy
*/
import java.io.*;
import java.util.*;
public class recycle
{
    public static void main (String [] args) throws IOException
    {
        BufferedReader f = new BufferedReader(new FileReader("recycle.txt"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("recycle1.txt")));
        
        int T = Integer.parseInt(f.readLine());
        
        HashSet<String> checked;
        
        String[] nums;
        
        for(int k = 1; k <= T; k++)
        {
            nums = f.readLine().split(" ");
            int A = Integer.parseInt(nums[0]), B = Integer.parseInt(nums[1]), ans = 0;
            for(int n = A; n < B; n++)
            {
                checked = new HashSet<String>();
                String a = "" + n;
                String tmp = a.substring(1) + a.substring(0, 1);
                while(!tmp.equals(a))
                {
                    if(Integer.parseInt(tmp) <= B && Integer.parseInt(tmp) > n && !checked.contains(tmp))
                    {
                        ans++;
                        checked.add(tmp);
                    }
                    tmp = tmp.substring(1) + tmp.substring(0, 1);
                }
            }
            
            out.println("Case #" + k + ": " + ans);
        }
        
        out.close();
        System.exit(0);
    }
}