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.*;

public class pro3 {

private static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

public static void main ( String [] args ) throws IOException
{
int N = Integer.parseInt(br.readLine());

for(int i = 0;i < N; i++)
System.out.println("Case #" + (i+1) + ": " + cal());
}

private static String cal() throws IOException {
	int start;
	int end;
	int lenth;
	int count=0;
	
	String[] buffer = br.readLine().split("\\s");
	
	start=Integer.parseInt(buffer[0]);
	end=Integer.parseInt(buffer[1]);
	
	lenth=Integer.toString(start).length();
	
	String digit= new String();
	String tempdigit=new String();
	
	for(int i=start;i<=end;i++){
		digit=Integer.toString(i);
		
		
		for(int j=1;j<lenth;j++){
			tempdigit=digit.substring(j).concat(digit.substring(0,j));
			if(Integer.parseInt(tempdigit)<=end
			   && Integer.parseInt(tempdigit)>=start){
				if(digit.compareTo(tempdigit)==0)
					break;
				/*System.out.println("digit "+digit);
				System.out.println("tempdigit"+tempdigit);
				*/count++;
			}
		}
			
		}
		

	
	

return Integer.toString(count/2);
}

}