package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.io.*;
import java.util.*;
// read file name frome command line
public class ProblemC{
	public static void main(String args[]){
	
		
		try{
			// reading file initialization
			String 			filename = args[0];
			FileReader 		frStream = new FileReader(		filename);
			BufferedReader 	brStream = new BufferedReader(	frStream);
			// writing file initializtion
			FileWriter     fwStream = new FileWriter(		filename.substring(0, filename.length()-3)+"Output.in" );
			BufferedWriter bwStream = new BufferedWriter( 	fwStream  );
			PrintWriter    pwStream = new PrintWriter(    	bwStream  );
			
			String text = brStream.readLine();
			int numCase =  Integer.parseInt( text );


                        for( int i = 0 ; i < numCase ; i++){
                            text = brStream.readLine();
                            StringTokenizer currLine = new StringTokenizer( text );
                            int min = Integer.parseInt(currLine.nextToken());
                            int max = Integer.parseInt(currLine.nextToken());
                            int counter = 0;
                            for( int j = min ; j < max ; j++){
                                String number =""+j;
                                int count=0;
                                for( int k = 1 ;k < number.length(); k++){
                                    String pairnumber=number.substring(k)+number.substring(0,k);
                                    int pair=Integer.parseInt(pairnumber);
                                    if(pair > j  && pair <= max ){
                                        count++;

                                        counter++;
                                        if(i==3 && count > 1)
                                            System.out.println(counter+" "+j+" "+pair);
                                        continue;
                                    }
                                }
                            }
                           pwStream.println ("Case #" + (i+1) + ": " +counter);
                    }
			// close all I/O files
			brStream.close();
			pwStream.close();
			
		}
		catch(IOException e){}
	}
}