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.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Main {
	private static int T = 0;
	public static BufferedReader bufReader;
	public static BufferedWriter bufWriter;
	public static File wFile, rFile;

	private static int tMinLimit = 1;
	private static int tMaxLimit = 50;
	private static String rFilename = "C-small-attempt0.in";
	private static String wFilename = "OUTPUT0.txt";

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		rFile = new File(rFilename);
		bufReader = new BufferedReader(new InputStreamReader(
				new FileInputStream(rFile), "utf8"));

		wFile = new File(wFilename);// «Ø¥ßÀÉ®×¡A·Ç³Æ¼gÀÉ
		bufWriter = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(wFile, false), "utf8"));

		T = Integer.valueOf(bufReader.readLine().trim());
		if (tMinLimit <= T && T <= tMaxLimit) {
			for (int i = 1; i <= T; i++) {
				String[] AB = bufReader.readLine().split(" ");
				new Round1C(i, Integer.parseInt(AB[0]), Integer.parseInt(AB[1]));
			}
		}
		bufWriter.close();
	}

}