package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package googl2;

/**
 *
 * @author Mimo
 */
import java.io.*;
import java.util.Scanner;
public class Googl2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws FileNotFoundException, IOException {
        // TODO code application logic here
        int t;
        int result;
        String input1;
        String input2;
        String input4;
        int a,b;
       File input=new File("C:\\Users\\Mimo\\Desktop\\C-small-attempt0.in");
            FileWriter output=new FileWriter("output.txt");
        BufferedWriter out = new BufferedWriter(output);
        Scanner getter =  new Scanner(input);
            t=getter.nextInt();
            getter.nextLine();
            for(int i=1;i<=t;i++)
            {
                result=0;
               input1=getter.next();
               input2=getter.next();
               a=Integer.valueOf(input1);
               b=Integer.valueOf(input2);
               for(int j=a;j<b;j++)
               {
                   input4=String.valueOf(j);
                  for(int jj=0;jj<input4.length()-1;jj++)
                  {
                     input4=input4.substring(input4.length()-jj-1)+input4.substring(0, input4.length()-jj-1);
                      if(Integer.valueOf(input4)<=b  && Integer.valueOf(input4)>j && input4.charAt(0)!='0')
                         result++;
                      System.out.println(input4+" "+" "+b+" "+result+" "+j);
                      input4=String.valueOf(j);
                  }
               }
               
                out.write("Case #"+i+": "+result);
       out.newLine();
            }
            out.close();
        
    }
}
