import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package javaapplication7;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 *
 * @author ucho
 */
public class JavaApplication7 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        //BitSet counted = new BitSet(2000000);
        PrintWriter writer = new PrintWriter(new FileWriter("output"));
        Scanner scanner = new Scanner(new FileReader("input"));
        int tests = scanner.nextInt();
        scanner.nextLine();
        for(int t=0;t<tests;t++) {
            int from = scanner.nextInt();
            int to = scanner.nextInt();
            int count = 0;
            for (int n = from; n <= to; n++) {
                String asString = String.valueOf(n);
                Set<String> used = new HashSet<String>();
                for(int j=1;j<asString.length();j++) {
                    String tmp = asString.substring(j)+asString.substring(0,j);
                    if (tmp.startsWith("0")) {
                        continue;
                    }
                    if (used.contains(tmp)) {
                        continue;
                    }
                    int intTmp = Integer.valueOf(tmp);
                    if (intTmp>=from && intTmp<=to && intTmp> n) {
                        count++;
                        used.add(tmp);
                    }
                }
            }
            String msg = "Case #"+(t+1)+": "+count;
            System.out.println(msg);
            writer.println(msg);
            scanner.nextLine();
        }
        writer.close();
        
    }
}
