import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;


public class RecycledNumbers {

	public static void main ( String [] arg ) throws NumberFormatException, IOException{
		BufferedReader reader = new BufferedReader(new FileReader(new File("input")));
		PrintWriter output = new PrintWriter(new File("output"));
		
		int cases = Integer.valueOf( reader.readLine() ); 
		for ( int c=1; c<=cases; c++ ){
			StringTokenizer tkn = new StringTokenizer( reader.readLine() ); 
			int a = Integer.valueOf( tkn.nextToken() ); 
			int b = Integer.valueOf( tkn.nextToken() ); 
			int sol=0; 
			//Set<String> superMap = new HashSet(); 
			
			for ( int k=a; k<b; k++ ){
				Set<String> aux = new HashSet();
				String sr = k + ""; 
				for ( int i=1; i<sr.length(); i++ ){
					
					int next = Integer.valueOf( (String)sr.subSequence(i, sr.length()) + (String)sr.subSequence(0, i) );
					if ( k<next && next<=b ){
						//System.out.println( k + "," + next );//+ " " +)
						if ( !aux.contains( next + "") ){
							sol++; 
							aux.add( next + "");
						} else {
							System.out.println(  next );
						}
					}
				}
			}
			System.out.println("Case #"+c+": "+sol);
			output.println( "Case #"+c+": "+sol );
		}
		output.close(); 
	}
	
}
