import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package main;

import java.io.File;
import java.io.IOException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;

import com.google.common.base.Charsets;
import com.google.common.base.Splitter;
import com.google.common.io.Files;

public class Recycle2 {
	public static void main(String[] args) throws IOException{
		final JFileChooser fc = new JFileChooser(new File("C:\\Users\\munsey\\Documents\\jam"));
		FileNameExtensionFilter filter = new FileNameExtensionFilter("txt", "txt");
		fc.setFileFilter(filter);
		int returnVal = fc.showOpenDialog(null);
		if (returnVal == JFileChooser.APPROVE_OPTION) {
			File file = fc.getSelectedFile();
			List<String> lines = Files.readLines(file, Charsets.UTF_8);
			Iterator<String> itr = lines.iterator();
			itr.next();
			int caseNum = 0;
			while(itr.hasNext()) {
				caseNum++;
				Iterator<String> minMax = Splitter.on(" ").split(itr.next()).iterator();

				int min = Integer.parseInt(minMax.next());
				int max = Integer.parseInt(minMax.next());
				
				int size = 0;
				for(int k = min; k <= max ; k++){
					size += recycle(k, min, max);
				}
				System.out.println("Case #" + caseNum + ": " + (size/2));
			}
		}
	}
	
	public static int recycle(int input, int min, int max){
		Set<Integer> output = new HashSet<Integer>();
		String sInput = Integer.valueOf(input).toString();
		StringBuffer build;
		for(int i = 0; i < sInput.length(); i++){
			build = new StringBuffer();
			for(int j = 0; j < sInput.length(); j++){
				build.append(sInput.charAt((i + j) % sInput.length()));
			}
			if(build.charAt(0) != 0 && !build.toString().equals(sInput)){
				int x = Integer.parseInt(build.toString());
				if(x >= min && x <= max){
					output.add(x);
				}
			}
		}
		return output.size();
	}
}
