/*
 * 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.*;
import java.math.BigInteger;
import java.util.*;

public class GC {
	String s  = null;
	String[] sp = null;
	
	
	
	public void run() throws Exception{
		
		BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
		
		BufferedWriter bw = new BufferedWriter(new FileWriter("OUTPUT.txt"));
		s = br.readLine();
		int T = Integer.parseInt(s);
		
		
		int t = 1;
		while(t <= T){
			s = br.readLine();
			sp = s.split(" ");
			int ans = 0;
			int a = Integer.parseInt(sp[0]);
			int b = Integer.parseInt(sp[1]);
			
			if(a < 10){
				a = 10;
			}
			while(a < b){
			
				String sa = Integer.toString(a);
				
				Set<String> set = new HashSet<String>();
				for(int i = 1; i < sa.length(); i++){
					String f = sa.substring(0, i);
					String ba = sa.substring(i);
					String ns = ba + f;
					if(set.contains(ns)){
						continue;
					}
					set.add(ns);
					int nb = Integer.parseInt(ns);
					if(nb > a && nb <= b){
						ans++;
					}
				}

				a++;
			}
			
			bw.write("Case #" + t + ": " + ans +  "\n");

			t++;
		}
		
		bw.close();
	}
	

	
	

	public static void main(String[] args) throws Exception {
		GC b = new GC();
		b.run();
	}

}
