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));
			
		}
		
		
		

	}
	
	
}

/**
 * Shashank Gupta
 * 
 * ****SinnerShanky****
 */
import java.io.*;
public class problem_C
{
    void main()
    {
        try
        {
           FileReader fr=new FileReader("C:\\USERS\\SHASHANK GUPTA\\DOWNLOADS\\C-small-attempt0.in");
           BufferedReader br=new BufferedReader(fr);
           int n=Integer.parseInt(br.readLine());
           for(int i=1;i<=n;i++)
           {
               int count=0;
               String s=br.readLine();
               int b=0;
               int a=0;
               for(int j=0;j<s.length();j++)
                 {
                   if(s.charAt(j)==' ')
                   {
                     a=Integer.parseInt(s.substring(0,j));
                     b=Integer.parseInt(s.substring(j+1,s.length()));
                     j=s.length();
                   }
                  }
                  for(int j=a;j<b;j++)
                  {
                      for(int k=j+1;k<=b;k++)
                      {
                          String temp=Integer.toString(j);
                          if(check(temp,k)==true)
                          count++;
                        }
                  }
                  System.out.println("Case #"+i+": "+count);
           }
            fr.close();
        }
        catch(Exception e)
        {
            System.err.println(e);
        }
    }
    boolean check(String s, int b)
    {
        String s1="";
        for(int i=s.length()-1;i>=0;i--)
        {
            s1=s.substring(0,i);
            s1=s.substring(i)+s1;
            int a=Integer.parseInt(s1);
            if(a==b)
            return true;
        }
        return false;
    }
        
}
