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.Scanner;
import java.io.*;
//import java.util.Hashtable;


public final class problem2 {

	//private Hashtable<String, String> recode = new Hashtable<String, String>();
	
	public static String decode(int min, int max){
		int total = 0;
		for(int i = min ; i <= max ; i++){
			
			String n = Integer.toString(i);
			int len = n.length();
			n = n.concat(n);
			//System.out.println(len + " " + n);
			
			for(int j = 1 ; j < len ; j++){
				//System.out.print(n.substring(j, j+len) + " ");
				String tmp = n.substring(j, j+len);
				//System.out.print(tmp + " ");
				
				if(tmp.charAt(0) != '0'){
					int m = Integer.valueOf(tmp);
					
					if(m > i && m <= max){
						//System.out.println(i + " " + m);
						total++;
					}
				}
				
			}
			//System.out.println();
			
			
		}
		return Integer.toString(total);
	}


	
	public static void main(String[] args){

		try{
			Scanner sc = new Scanner(new File("C-small-attempt0.in"));
			FileWriter fw = new FileWriter("final.txt");
		
		
			String tmp = sc.nextLine();
			int step = Integer.valueOf(tmp);
		
			int counter = 1;
			while(sc.hasNextLine()){
				//System.out.print("Case #" + counter + ": "); 
				
				String s = sc.nextLine();
				Scanner ssc = new Scanner(s);
				int A = ssc.nextInt();
				int B = ssc.nextInt();
				
				
				//System.out.println(A + " " + B); 
				String xx = decode(A, B);
				System.out.println("Case #" + counter + ": " + xx);
				fw.write("Case #" + counter + ": " + xx);
				fw.write("\n");
				counter++;
				if(step < counter)
					break;
			}
			fw.close();
		}catch(Exception e){}
		
	}
	
}