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.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class Main {

	/**
	 * @param args
	 */
	public static void main(String[] args) 
	{
		try
		{
			  // Open the file that is the first 
			  // command line parameter
			  FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
			  // Get the object of DataInputStream
			  DataInputStream in = new DataInputStream(fstream);
			  BufferedReader br = new BufferedReader(new InputStreamReader(in));
			  String strLine;
			  //Read File Line By Line			
			  int cases = 0;
			  ArrayList<String> input = new ArrayList();
			  ArrayList<String> output = new ArrayList();
			  
			  while ((strLine = br.readLine()) != null)   
			  {
				  // Print the content on the console
				  input.add(strLine);
			  }
			  //Close the input stream
			  in.close();
			  
			  cases = Integer.parseInt(input.get(0));			  
			  
			  for(int i=0; i<cases; i++)
			  {
				  String[] numbers = input.get(1 + 1*i).split(" ");				  
				  int A = Integer.valueOf(numbers[0]);
				  int B = Integer.valueOf(numbers[1]);				  
				  
				  int number = 0;
				  
				  for (int k=B; k>=A; k--)
					  for (int j=A; j<=k; j++)
					  {
						  String strJ = String.valueOf(j);
						  String strK = String.valueOf(k);
												  
						  
						  if (strJ.length() == strK.length())
						  {							  
							  
							  String newJ = strJ.substring(strJ.length() - 1) + strJ.substring(0, strJ.length() -1);
							  
							  while(!newJ.equals(strJ))
							  {								 
								  if (newJ.equals(strK))
									  number++;  
								  
								  newJ = newJ.substring(newJ.length() - 1) + newJ.substring(0, newJ.length() -1);
							  }
								  
						  }
					  }
				  
				  output.add("Case #" + (i + 1) + ": " + number);
			  }
			  
			  for (int i=0; i<output.size(); i++)
				  System.out.print(output.get(i) + "\n");
			  
		}
		catch (Exception e)
		{
			//Catch exception if any
			System.err.println("Error: " + e.getMessage() + " " + e.getClass());
		}

	}

}
