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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.Scanner;

public class C {
    
    private static boolean isRecyledPair(String n, String m) {
        int l = n.length();
        String s = "";
        
        for (int i = 1; i < l; i++) {
            for (int j = 0; j < l; j++) {
                s += n.charAt((j+i) % (l));
            }
            if (s.equals(m)) {
                return true;
            }
            s = "";
        }
        
        return false;
    }
    
    public static void main(String[] args) {
        try {
            Scanner file = new Scanner(new File(args[0]));
            int T = Integer.parseInt(file.nextLine());
            
            BufferedWriter out = new BufferedWriter(new FileWriter(args[0].substring(0, args[0].length()-2) +"out"));
            for (int i = 0; i < T; i++) {
                int A = file.nextInt();
                int B = file.nextInt();
                
                int ans = 0;
                for (int j = A; j < B; j++) {
                    for (int k = j+1; k <= B; k++) {
                        if (isRecyledPair(String.valueOf(j), String.valueOf(k))) {
                            ans++;
                        }
                    }
                }
                
                out.write(new StringBuilder().append("Case #").append(i+1).append(": ").append(ans).append("\n").toString());
            }
            out.close();
            
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        
    }
}