package fixjava;

public class StringUtils {

	/** Repeat the given string the requested number of times. */
	public static String repeat(String str, int numTimes) {
		StringBuilder buf = new StringBuilder(Math.max(0, str.length() * numTimes));
		for (int i = 0; i < numTimes; i++)
			buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the left hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padLeft(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(padChar);
		for (int i = 1, mi = bufSize - str.length(); i < mi; i++)
			buf.append(padChar);
		buf.append(str);
		return buf.toString();
	}

	/**
	 * Pad the right hand side of a field with the given character. Always adds at least one pad character. If the length of str is
	 * greater than numPlaces-1, then the output string will be longer than numPlaces.
	 */
	public static String padRight(String str, char padChar, int numPlaces) {
		int bufSize = Math.max(numPlaces, str.length() + 1);
		StringBuilder buf = new StringBuilder(Math.max(numPlaces, str.length() + 1));
		buf.append(str);
		buf.append(padChar);
		while (buf.length() < bufSize)
			buf.append(padChar);
		return buf.toString();
	}

	/** Intern all strings in an array, skipping null elements. */
	public static String[] intern(String[] arr) {
		for (int i = 0; i < arr.length; i++)
			arr[i] = arr[i].intern();
		return arr;
	}

	/** Intern a string, ignoring null */
	public static String intern(String str) {
		return str == null ? null : str.intern();
	}

}

import java.util.Scanner;
import java.io.*;
public class Tobi
{
    static String out="",output="";

    public static void main(String[] args)
    {
        try
        {
             Scanner in = new Scanner(new File("file.in"));
             int n = in.nextInt();
             int count = 1;
             String out = "";
             while(in.hasNext())
             {
               int a = in.nextInt();
               int b = in.nextInt();
               out += "Case #"+count+": "+ activity(a,b)+"\n";
               count++;
             try
             {
                 File file = new File("output.dat");
                 PrintWriter output = new PrintWriter(file);
                 output.write(out);
                 output.close();
                }
                catch(Exception exception)
                {
                 System.out.println("ERROR");
                }
             }
    }catch(Exception exception){
        System.out.println("ERROR");
    }
    System.out.println("DONE");
    }

    public static int activity(int A, int B)
    {
        int counter = 0;
        
        
        for(int i = A; i <= B; i++)
        {
            String all[] = myGenerator(Integer.toString(i));
            
            for(int j = 0; j < all.length; j++)
            {
              if((i < Integer.parseInt(all[j])) && (Integer.parseInt(all[j]) <= B))
              {
                counter++;
              }

            }
        }
        return counter;
    }

    public static String[] myGenerator(String word)
    {
        String[] all = new String[word.length()-1];//changed frm len - 1
        for(int i = 0; i < all.length; i++)
        {
            all[i] = generate(word);
            word = generate(word);
        }
        return all;
    }
    public static String generate(String w)
    {
        String ans = w.substring(w.length()-1);
        for(int i = 0; i < w.length()-1; i++)
        {
          ans += w.substring(i,i+1);
        }
        return ans;
    }
}
