import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * User: aeg
 * Date: 12/04/14
 * Time: 22:58
 * To change this template use File | Settings | File Templates.
 */
public class ReceycledNumbers {
    public static void main (String[] argc) throws FileNotFoundException {
        ReceycledNumbers  renum = new ReceycledNumbers();
        renum.solve();

    }

    private void solve() throws FileNotFoundException {
        FileInputStream fis = new FileInputStream("csv/QR_C/C-large.in");
        Scanner sc = new Scanner(fis);

        int T = sc.nextInt();

        loop:
        for (int i = 0; i < T; i++) {
            int A = sc.nextInt();
            int B = sc.nextInt();
            int count =0;

            System.out.print("Case #"+(i+1)+": ");
            if (B < 10) {
                System.out.println("0");
                continue;
            }
            for (int j = A; j < B; j++) {
                String str = ((Integer) j).toString();
                count +=tryRecycle(str, j, B);

            }
            System.out.println(count);
        }
      }

    private int tryRecycle(String str, int j, int b) {
        int count=0;
        for(int i=1;i<str.length();i++){
            String s2 = str.substring(str.length()-i,str.length()) + str.substring(0,str.length()-i);
            Integer i2 = Integer.valueOf(s2);
            if ((j < i2) && (i2 <= b)) {
                count++;
            }
        }
        return count;
    }


}
