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.*;
import java.math.*;

public class C
{
  static int[] size={1,10,100,1000};
	public static void main(String[] args) throws Exception
	{
    int T;	
		RandomAccessFile in = new RandomAccessFile(args[0],"r");
		T=Integer.parseInt(in.readLine());
		


		for (int i=1; i<=T; i++)
		{
      String line=in.readLine();      
      String[] temp=line.split(" ");
      int a=Integer.parseInt(temp[0]);
      int b=Integer.parseInt(temp[1]);      
      String ans=solve(a,b);
      System.out.println("Case #"+i+": "+ans);
    }

		in.close();
	}
	

	public static String solve(int a, int b)
  {
    int total=0;
    for (int i=a; i<=b; i++) total+=count(i,b);
    return ""+total;
  }
  
  public static int count(int start, int max)
  {
    //System.out.println("Start "+start);
    String temp=""+start;
    int N=temp.length();
    
    int a=start;
    int count=0;
    for (int i=0; i<N-1; i++)
    {
      a=rotate(a,size[N-1]);
      //System.out.println(a);
      if (a>start && a<=max) count++;
    }
    
    return count;
  }
  
  public static int rotate(int a, int n)
  {
    int last=a%10;
    return a/10+n*last;
  }
  
  public static void print(int[] b)
  {
    for (int i=0; i<b.length; i++) System.out.print(b[i]);
    System.out.println();
  }
}