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 codejam3;

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

/**
 *
 * @author Albatross
 */
public class Main {

    
    public static void main(String[] args) throws FileNotFoundException, IOException {

        String final_output="";
        FileReader input = new FileReader("Input.txt");
        BufferedReader bufRead = new BufferedReader(input);

        try{

            String line;
            line = bufRead.readLine();
            int testCases = Integer.parseInt(line);

            

            for (int i=0; i<testCases; i++)
            {
                //System.out.println("Case "+i);
                int pairs = 0;
                line = bufRead.readLine();
                String[] numbers = line.split(" ");

                Integer A = Integer.parseInt(numbers[0]);
                Integer B = Integer.parseInt(numbers[1]);

                for (int j=A; j<B; j++)
                {
                    String numA = Integer.toString(j);
                    for (int k=j+1; k<=B; k++)
                    {
                        String numB = Integer.toString(k);
                        for (int t=1; t<=numB.length(); t++)
                        {
                            //System.out.println("NumA:"+numA);
                            //System.out.println(numB);
                            String prefix = numB.substring(0, t);
                            //System.out.println(prefix);
                            String suffix = numB.substring(t, numB.length());
                            //System.out.println(suffix);
                            if ((suffix+prefix).equals(numA) && suffix.length()!=0){
                                pairs++; //System.out.println("pair!"); break;
                                //System.out.println(numA+" "+numB);
                            }
                        }
                    }
                }

                //System.out.println(pairs);
                final_output = final_output+"Case #"+(i+1)+": "+pairs+"\n";
            }

        }
        finally{}

        FileWriter output_file = new FileWriter("Output.txt");
        BufferedWriter bufWrite = new BufferedWriter(output_file);
        try{

            bufWrite.write(final_output);
        }
        finally{
            bufWrite.close();
        }

    }

}
