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.IOException;
import java.util.Scanner;


public class Recycle {

	
	public static void main (String[] args) {
		int s, t;
		Scanner scanner;
		
		try {
			scanner = new Scanner(new File("C:\\a.in"));
			if(scanner.hasNextLine()) {
				scanner.nextLine();
			}
			int testCase = 1;
			while(scanner.hasNextLine()) {
				String line = scanner.nextLine();
				Scanner iscn = new Scanner(line);
				s = iscn.nextInt();
				t = iscn.nextInt();
				iscn.close();
				
				int counter = 0;
				for(int i=s; i<=t; i++) {
					for(int j=s; j<i; j++) {
						if(isRecycled(i+"", j+"")) {
							counter++;
						}
					}
				}
				
				System.out.println("Case #"+testCase+": " +counter);
				testCase++;
			}
		} catch (IOException e) {
			System.err.println("could not open file");
		}
		
		
	}


	private static boolean isRecycled(String a, String b) {
		for(int i=1; i<a.length(); i++) {
			if(cycleBy(a, i).equals(b)) {
				return true;
			}
		}
		return false;
	}
	
	public static String cycleBy(String str, int places) {
		return str.substring(places) + str.substring(0, places);
	}
	
}
