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));
			
		}
		
		
		

	}
	
	
}
import java.io.*;
import java.util.HashSet;
import java.util.Scanner;

/**
 * Created by IntelliJ IDEA.
 * User: singh
 * Date: 14/4/12
 * Time: 4:46 AM
 * To change this template use File | Settings | File Templates.
 */
public class RecycleNumbers {
    public static void main(String[] args) throws IOException {
//        Scanner sc=new Scanner(System.in);
        Scanner sc=new Scanner(new File("C:\\Users\\singh\\Documents\\codejam\\input.in"));
        int testCases=sc.nextInt();
        String outPut="";
        PrintWriter writer=new PrintWriter("C:\\Users\\singh\\Documents\\codejam\\out0.in");
//        BufferedWriter bf=new BufferedWriter(new FileWriter("C:\\Users\\singh\\Documents\\codejam\\out0.txt"));
        for(int iterator=0;iterator<testCases;iterator++)
        {
            HashSet<String> set=new HashSet<String>();
            int counter=0;
            int A=sc.nextInt();
            int B=sc.nextInt();
//            int BFirst=Integer.parseInt((B+"").charAt(0)+"");
            for(int currentN=A;currentN<B;currentN++)
            {
                String nString=currentN+"";
                if(iterator==3)
                {
                    System.out.println();
                }
//                int nFirst=Integer.parseInt(nString.charAt(0)+"");
//                if(nFirst>BFirst)
//                {
//                    break;
//                }
//                if(!nString.endsWith("0"))
//                {
                for(int i=1;i<=nString.length()-1;i++)
                {
                    String nSubString=nString.substring(nString.length()-i,nString.length())+nString.substring(0,nString.length()-i);
                    if(!nSubString.startsWith("0"))
                    {
                    if(!nString.equals(nSubString))
                    {
                    int nSubInt=Integer.parseInt(nSubString);
                    if(nSubInt<=B && nSubInt>(Integer.parseInt(nString)))
                    {
                        if(!set.contains(nString+","+nSubString))
                        {
                            set.add(nString+","+nSubString);
                            counter++;
                        }
                    }
                    }
                    }
                }
//                }
            }
//            }
         outPut+="Case #"+(iterator+1)+": "+counter+"\n";
        }
           writer.write(outPut);
            writer.flush();
            writer.close();
    }
}
