import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileReader;

@SuppressWarnings("CallToThreadDumpStack")
public class Utils
{
    private static FileOutputStream outStream;
    private static BufferedReader reader;
    private static boolean debug = false;

    public static void openOutFile(String str, boolean debug)
    {
        Utils.debug = debug;
        try { outStream = new FileOutputStream(str, false); }
	catch (Exception e) { e.printStackTrace(); }
    }

    public static void openInFile(String str)
    {
        try { reader = new BufferedReader(new FileReader(str)); }
	catch (Exception e) { e.printStackTrace(); }
    }

    public static void closeOutFile()
    {
        try { outStream.close(); }
	catch (Exception e) { e.printStackTrace(); }
    }

    public static void closeInFile()
    {
        try { outStream.close(); }
	catch (Exception e) { e.printStackTrace(); }
    }

    public static String readFromFile()
    {
        try { return reader.readLine(); }
        catch (Exception e) { e.printStackTrace(); }
        return null; // shouldn't get here
    }
    public static void writeToFile(String str)
    {
        if (debug) System.out.println(str);
        try
        {
            for(int k=0; k<str.length(); k++)
            {
                outStream.write(str.charAt(k));
            }
            outStream.write(13);
            outStream.write(10);
        }
	catch (Exception e)
            { e.printStackTrace(); }
    }

}
