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


public class problem3 {
	public static void main(String[] args){
		try{
			  // Create file 
			  FileWriter fstream1 = new FileWriter("E:/out.txt");
			  BufferedWriter outp = new BufferedWriter(fstream1);
			  try{
				  Scanner sc = new Scanner(new File("E:/C-small-attempt0.in"));
				  int cnt1=sc.nextInt();
				  cnt1=1;
				  while (sc.hasNextInt()) {
					  int low = sc.nextInt();
					  int high = sc.nextInt();
					  int cnt=0;
					  for(int i=low; i<=high;i++){
						  int y=i;
						  String str = new Integer(i).toString();
						  int[] sol = new int[str.length()];
						  int cn = 0;
						  for(int j=0;j<str.length(); j++){
							  while(y%10==0){
								  y=y/10;
								  j++;
							  }	  
							  int x=y%10;
							  y=y/10;
							  y+=x*(int)(Math.pow(10, (str.length()-1)));
							  if(y>i&&y<=high){
								  boolean rep = false;
								  for(int k=0;k<cn;k++){
									  if(y==sol[k])
										  rep = true;
								  }
								  if(rep==false){
									  cnt++;
									  sol[cn]=y;
									  cn++;
								  }
							  }
								  
						  }
						  
					  }
					  outp.write("Case #"+cnt1+": "+cnt+'\n');
					  cnt1++;
				  }
			  }catch(FileNotFoundException e){System.out.println("File not found");}
			  outp.close();
		}catch (Exception e){//Catch exception if any
		System.err.println("Error: " + e.getMessage());
		} 
	}
}
