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.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;


public class Main {

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		Scanner in = new Scanner(new File("input.txt"));
		
		int testcases = in.nextInt();
		int a, b, count;
		String aString, bString;
		ArrayList<String> compList = new ArrayList<String>();
		
		for(int test=1; test<=testcases; test++)
		{
			a = in.nextInt();
			b = in.nextInt();
			count = 0;
			
			while(a<b)
			{
				compList = new ArrayList<String>();
				aString = String.valueOf(a);
				
				for(int i=1; i<aString.length(); i++)
				{
					compList.add(aString.substring(aString.length()-i, aString.length())+aString.substring(0,aString.length()-i));
				}
				
				for(int i=a+1; i<=b; i++)
				{
					bString = String.valueOf(i);
					
					for(String s : compList)
					{
						if (bString.equals(s) && s.indexOf("0")!=0)
						{
							count++;
						}
					}
				}
				a++;
			}
			
			System.out.println("Case #"+test+": "+count);
			
		}

	}

}
