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.LinkedList;
import java.util.Scanner;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;


/**
 *Recycled Numbers
 */

/**
 * @author Avengee
 */

public class Demo {

	public static void main(String[] args) throws IOException {
		//Reading and Writing Files
		Scanner scan = new Scanner(new File("C-large.in"));
		FileWriter writer = new FileWriter("C-large-output.txt");
		PrintWriter pw = new PrintWriter(writer);

		//variable declaration
		int T,A,B;
	
		//code
		T = scan.nextInt();
		for (int i=1;i<=T;i++) 
		{
			A = scan.nextInt();
			B = scan.nextInt();
			int y=0;
			
			int num=String.valueOf(A).length();//number of digits
			int nl=A;
			
			while(nl<=B)
			{
				int n=nl;
				LinkedList<Integer> s=new LinkedList<Integer>();
			for(int j=1;j<num;j++)
			{
				int m,mult=1;;
				
				int k=n%10;
				n/=10;
				for(int l=1;l<num;l++)
					mult*=10;
				m=(k*mult)+n;
				int index=s.indexOf(m);
				if(m>nl && m<=B)
					{
					if(index>=0);
					else{y++;
					s.add(m);}
					}
				n=m;
			}
			
			nl++;
			
			}
			
			System.out.println("Case #"+i+": "+y);
			pw.println("Case #"+i+": "+y);
			
		}
	
		scan.close();
		writer.close();	
	}
	

}


