import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

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

import java.io.*;
import java.util.HashSet;
import java.util.StringTokenizer;

/**
 *
 * @author ÐÐ¸ÑÐ¸Ð»Ð» Ð¸ ÐÐ°Ð¿Ð°
 */
public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("input.in")));
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output.txt")));
            int n = Integer.parseInt(br.readLine());
            for (int testCaseI = 0; testCaseI < n; testCaseI++) {
                StringTokenizer st = new StringTokenizer(br.readLine());
                String aStr = st.nextToken();
                String bStr = st.nextToken();
                int a = Integer.parseInt(aStr);
                int b = Integer.parseInt(bStr);
                int res = 0;
                for (int currA = a; currA <= b; currA++) {
                    String currAStr = Integer.toString(currA);
                    HashSet<String> hashRes = new HashSet<String>();
                    for (int p = 1; p < aStr.length(); p++) {
                        String moved = currAStr.substring(p) + currAStr.substring(0, p);
                        if ((moved.compareTo(bStr) <= 0) && (moved.compareTo(currAStr) > 0)) {
                            hashRes.add(moved);
                        }
                    }
                    res += hashRes.size();
                }
                bw.write("Case #" + (testCaseI + 1) + ": " + res);
                bw.newLine();
            }
            br.close();
            bw.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}
