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

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

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;


public class Main {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub

		int numCase = 0;
		BufferedReader br = null;
		PrintWriter pr = null;

		try {

			br = new BufferedReader(new FileReader(args[0]));
			pr = new PrintWriter(new FileWriter("a.out"));

			numCase = Integer.parseInt(br.readLine());

			String line;
			String[] arr;

			for (int i = 0 ; i < numCase ; i++){

				line = br.readLine();
				arr = line.split(" ");
				String A = arr[0];
				String B = arr[1];
				long Along = Long.parseLong(A);
				long Blong = Long.parseLong(B);

				long count = 0;

				if (A.length() == 1)
					count = 0;
				else {
					for (long Nlong = Along; Nlong < Blong ; Nlong++){
						
						String N = "" + Nlong;
						
						long LastM = -1;
						
						for (int j = 1 ; j < N.length(); j++){
							String M = N.substring(j, N.length())+N.substring(0, j);
							
							long Mlong = Integer.parseInt(M);
							
							if (Mlong > Nlong && Mlong <= Blong && LastM != Mlong){
								count++;
								LastM = Mlong;
							}
						}

					}
				}
				
				pr.println("Case #" + (i+1) + ": " + count);
			}
			pr.flush();

		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			if (pr != null)
				pr.close();
			if (br != null)
				br.close();
		}

	}

}