/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;


public class C {

	public final String INPUT_FILE_NAME = "c_in";
	public final String OUTPUT_FILE_NAME = "c_out";
	
	int kase = 1;
	int T = 0;
	int a,b;
	public void run() throws IOException{
		Scanner s = new Scanner(new File(INPUT_FILE_NAME));
		PrintWriter pw = new PrintWriter(new FileWriter(OUTPUT_FILE_NAME));
		//PrintWriter pw = new PrintWriter(new OutputStreamWriter(System.out));
		
		T = s.nextInt();
		while (T-- > 0){
			a = s.nextInt();
			b = s.nextInt();
			
			int ans = 0;
			for (int i = a; i <=b ; i++) {
				for (int j = i+1;j <=b ; j++) {
					String s1 = i + "";
					//String s2 = j + "";
					String temp = "";
					for (int k = 1; k < s1.length() ; k++) {
						temp = s1.substring(s1.length() - k) + s1.substring(0,s1.length()-k);
						int r1 = Integer.parseInt(temp); 
						if (r1 == j){
							ans++;
							break;
						}
					}
				}
			}
			
			pw.println("Case #" + kase + ": " + ans);
			kase++;
		}
		
		pw.close();
		s.close();
	}
	
	
	public static void main(String[] args) throws IOException {
		(new C()).run();
	}

}
