import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.awt.List;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class ProblemC {

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(new File(args[0]));
		int numberOfLines = Integer.parseInt(sc.nextLine());
		Scanner lineScan;
		int lowerBound, upperBound;
		String line;
		String number;
		String movingPart;
		String newNumber;
		int count;
		
		for (int i = 0; i< numberOfLines; i++)
		{
			line = sc.nextLine();
			lineScan = new Scanner(line);
			lowerBound = lineScan.nextInt();
			upperBound = lineScan.nextInt();
			count = 0;
			
			if (upperBound < 10)
			{
				System.out.println("Case #" + (i+1) + ": " + 0);
			}
			else
			{
				for (int j = lowerBound; j<= upperBound; j++)
				{
					number = Integer.toString(j);

					for (int k = 1; k< number.length(); k++)
					{
						if (number.charAt(k) != '0')
						{
							movingPart = number.substring(k, number.length());

							newNumber = movingPart + number.substring(0,k);

							if (Integer.parseInt(newNumber) <= upperBound && 
									Integer.parseInt(newNumber) > Integer.parseInt(number))
							{
								count ++;
								//System.out.println("Number " + number + " New number " + newNumber + "counter" + count);
							}
						}
					}


				}

				System.out.printf("Case #%d: %d\n",(i+1), count);

			}
		}
	}
}
