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));
	}
}

package codejam;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public abstract class TestCaseReader<T> {

	// public static final String smallSet = "small.txt";
	// public static final String largeSet = "large.txt";

	private BufferedReader reader;

	public TestCaseReader(String file) {
		try {
			File small = new File(file);
			reader = new BufferedReader(new FileReader(small));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
	}

	public int getTestCases() {
		String line = null;
		try {
			line = reader.readLine();
		} catch (IOException e) {
			e.printStackTrace();
		}

		if (line != null) {
			return Integer.parseInt(line);
		}

		throw new RuntimeException();
	}

	public T getNextTestCase() {
		String line = null;
		try {
			line = reader.readLine();
		} catch (IOException e) {
			e.printStackTrace();
		}

		if (line != null) {
			return parseTestCase(line);
		}

		// EOF
		return null;
	}

	protected abstract T parseTestCase(String line);

}
