package Main;

import com.sun.deploy.util.ArrayUtil;
import org.apache.commons.lang3.ArrayUtils;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;

/**
 * Created with IntelliJ IDEA.
 * User: arran
 * Date: 14/04/12
 * Time: 3:12 PM
 * To change this template use File | Settings | File Templates.
 */
public class Round {
    public StringBuilder parse(BufferedReader in) throws IOException {
        StringBuilder out = new StringBuilder();
        String lineCount = in.readLine();

        for (int i = 1; i <= Integer.parseInt(lineCount); i++)
        {
            out.append("Case #"+i+": ");
            System.err.println("Case #"+i+": ");
            String line = in.readLine();
            String[] splits = line.split(" ");
            int p1 = Integer.valueOf(splits[0]);
            int p2 = Integer.valueOf(splits[1]);
            int r = pairRecyclable(p1, p2);
            out.append(r);

//            if (i < Integer.parseInt(lineCount))
                out.append("\n");
        }
        return out;
    }

    public static int pairRecyclable(int i1, int i2) {
        HashSet<String> hash = new HashSet<String>();
        for (int i = i1; i < i2; i++)
        {
            String istr = String.valueOf(i);
            if (istr.length() < 2) continue;
            for (int p = 0; p < istr.length() ; p++)
            {
                String nistr = istr.substring(p,istr.length()).concat(istr.substring(0,p));
                if (Integer.valueOf(nistr) < i1) continue;
                if (Integer.valueOf(nistr) > i2) continue;
                if (nistr.equals(istr)) continue;
                String cnistr = (Integer.valueOf(nistr) > Integer.valueOf(istr)) ?  istr + "," + nistr : nistr + "," + istr;
                hash.add(cnistr);
            }
        }
        return hash.size();
    }

    public static void main(String[] args) {
        InputStreamReader converter = null;
        try {
            int attempt = 0;
            String quest = "C";
//            String size = "small-attempt";
            String size = "large";
            converter = new InputStreamReader(new FileInputStream("src/resource/"+quest+"-"+size+".in"));
            BufferedReader in = new BufferedReader(converter);
            Round r = new Round();
            String str = r.parse(in).toString();
            System.out.print(str);
            FileOutputStream fos = new FileOutputStream(quest+"-"+size+".out");
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            BufferedWriter bw = new BufferedWriter(osw);
            bw.write(str);
            bw.flush();
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Queue;
import java.util.StringTokenizer;

public class C {

	
	private void run() throws IOException {
		// put your code here ..
		
		int testcases=nextInt();
		
		int number=1;
		
		

		
		
		while(testcases-->0){
			long answer=0;
			
			int A=nextInt();
			int B=nextInt();
			

			
			

			for (int i = A; i < B; i++) {
				String a=new String(i+"");
				ArrayList<String> hash=new ArrayList<String>();
				for (int j = 1; j < a.length(); j++) {
					String now =a.charAt(a.length()-1)+a.substring(0,a.length()-1);
					int n=Integer.parseInt(now);
					String nlen=n+"";
					
					if(nlen.length()!=now.length()||nlen.equals(a)||n<=i||hash.contains(n+"")){
						a=now;
						continue;
					}
					

					if(n<=B){
						hash.add(n+"");
						answer++;
						
					}
					a=now;
					
				}
				
			}

				
			
			writeln("Case #"+(number++)+": "+answer);
		}
		
		
	}
	
	
	
	
	
	
	
	

	private int nextInt() throws IOException {
		if (!input.hasMoreTokens())input=new StringTokenizer(in.readLine());
		return Integer.parseInt(input.nextToken());
	}
	private long nextLong() throws IOException {
		if (!input.hasMoreTokens())input=new StringTokenizer(in.readLine());
		return Long.parseLong(input.nextToken());
	}
	private double nextDouble() throws IOException {
		if (!input.hasMoreTokens())input=new StringTokenizer(in.readLine());
		return Double.parseDouble(input.nextToken());
	}
	private String nextString() throws IOException {
		if (!input.hasMoreTokens())input=new StringTokenizer(in.readLine());
		return input.nextToken();
	}
	private void write(String output){
		out.write(output);
		out.flush();
	}
	private void writeln(String output){
		out.write(output+"\n");
//		out.flush();
	}
	private void end() throws IOException{
		in.close();
		out.close();
		System.exit(0);
	}
	
	private BufferedReader in;
	private PrintWriter out;
	private StringTokenizer input;
	
	public C() throws IOException {
		//Input Output for Console to be used for trying the test samples of the problem 
//		in = new BufferedReader(new InputStreamReader(System.in));
//		out = new PrintWriter(System.out);
		//-------------------------------------------------------------------------
		//Input Output for File to be used for solving the small and large test files
		in = new BufferedReader(new FileReader("C-large.in"));
		out = new PrintWriter("output3Large.txt");
		//-------------------------------------------------------------------------
		//Initialize Stringtokenizer input
		input = new StringTokenizer(in.readLine());
	}
	
	public static void main(String[] args) throws Exception {
		//-------------------------------------------------------------------------
		//initializing...
		C sol = new C();
		//-------------------------------------------------------------------------
		sol.run();
		//-------------------------------------------------------------------------
		//closing up
		sol.end();
		//--------------------------------------------------------------------------
	}
	
}
