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));
			
		}
		
		
		

	}
	
	
}
/*
 * Google Code Jam 2012 - Qualification Round (14.04.2012)
 * Thomas "ThmX" DenorÃ©az - thomas.denoreaz@gmail.com
 */

package codejam._2012.qualif;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;

public class C {
	
	static final String FILENAME = "C-small-attempt0";

	public static void main(String[] args) throws NumberFormatException, IOException {
		
		BufferedReader reader = new BufferedReader(new FileReader(FILENAME + ".in"));
		PrintWriter writer = new PrintWriter(FILENAME + ".out");
		
		int N = Integer.valueOf(reader.readLine());
		for (int i=1; i<=N; i++) {
			
			String[] nums = reader.readLine().split(" "); // -> A B
			int A = Integer.valueOf(nums[0]);
			int B = Integer.valueOf(nums[1]);
			
			
			HashSet<String> set = new HashSet<String>();
			
			for (int n = A; n <= B; n++) {
				String nStr = String.valueOf(n);
				
				int nLen = nStr.length();
				for (int j = 1; j <= nLen-1; j++) {					
					String mStr = String.valueOf( Integer.valueOf( nStr.substring(nLen-j) + nStr.substring(0, nLen-j) ) );
					
					int m = Integer.valueOf(mStr);
					if ((mStr.length() == nStr.length()) && (n < m) && (m <= B)) {
						set.add(n + ":" + m);
					}
				}
				
			}
			
			writer.println("Case #" + i + ": " + set.size());
		}
		
		writer.flush();
		writer.close();
		reader.close();
	}

}
