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.*;
import java.util.*;

public class RecycledNumbers {
	public static void main(String... args) throws Exception {

		BufferedReader br = new BufferedReader(
		new FileReader(System.getProperty("user.home") + "/Desktop/csmall.in")
		//new InputStreamReader(System.in)
		);

		int times = Integer.parseInt(br.readLine());

		for (int i = 0; i < times; i++) {
			numbers(br.readLine(), i+1);
		}

	}

	public static void numbers(String data, int num) {
		int a = Integer.parseInt(data.split(" ")[0]);
		int b = Integer.parseInt(data.split(" ")[1]);
		int count = 0;
		
		for (int n = a; n < b; n++) {
			String nn = n+"";
			for (int m = n+1; m <= b; m++) {
				String mm = m+"";
				if (nn.length() != mm.length()) {continue;}
				
				boolean check = false;
				for (int i = mm.length() - 1; i >= 0; i--) {
					String news = mm.substring(i);
					String newst = news + mm.substring(0, i);
					check = check(nn, newst);
					if (check) {
						count++;
						break;
					}
				}
				
			}
		}
		
		System.out.println("Case #" + num + ": " + count);
	}
	
	public static boolean check(String a, String b) {
		a = Integer.parseInt(a) + "";
		b = Integer.parseInt(b) + "";
		
		if (a.equals(b) || a.length() != b.length()) {
			return false;
		}
		
		String end = "";
		
		for (int i = b.length(); i >= 0; i--) {
			String first = b.substring(i);
			end = first + b.substring(0, i);
			
			if (a.equals(end)) {
				return true;
			}
		}
		
		return false;
	}
}
