import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.util.*;
import java.io.*;

public class C {
	public static int computeDigits(int x){
		if(x<10){
			return 1;
		}else{
			return 1+computeDigits(x/10);
		}
	}
	public static boolean recycled(int x, int y){
		int n = computeDigits(x);
		for(int i = 1;i<n;i++){
			int c = (int)Math.pow(10,i);
			int number = x/c;
			int mod = x%c;
			int newNumber = (mod*(int)Math.pow(10,n-i))+number;
			//System.out.println(newNumber);
			if(newNumber == y) return true;		
		}
		return false;
	}	

	public static void main(String []args){
		Scanner input = new Scanner(System.in);
		int cases = input.nextInt();
		int []result = new int[cases];
		//input.nextLine();
		for(int i = 0; i < cases ;i++){
			int a = input.nextInt();
			int b = input.nextInt();
			if(a<10 || b<10){
				result[i]=0;
			}else{
				for(int j = a; j<b;j++){
					for(int k=a+1;k<=b;k++){
						if(j<k && recycled(j,k)) result[i]++;
					}
				}
			}
		}
		
		try {
			BufferedWriter output = new BufferedWriter(new FileWriter("outfilename.txt"));
			for(int i = 1; i<=cases ;i++){
			System.out.println("Case #"+i+": "+result[i-1]);
			output.write("Case #"+i+": "+result[i-1]+"\n");
			
			}
			output.close();
		} catch (IOException e) {
		}
		
		
	}
	




}