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 com.renoux.gael.codejam.utils;

import java.io.Closeable;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;


public class Output implements Closeable {

    private static String lineSeparator = System.getProperty("line.separator");

    private FileWriter writer;


    private Output(File file) {
        try {
            writer = new FileWriter(file);
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

    public static Output open(File file) {
        System.out.println("======== " + file);
        return new Output(file);
    }

    public void writeLine(String text) {
        System.out.println(text);
        try {
            writer.write(text);
            writer.write(lineSeparator);
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

    public void write(String text) {
        System.out.print(text);
        try {
            writer.write(text);
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

    public void writeLine(Object... text) {
        try {
            for (Object s : text) {
                System.out.print(s);
                writer.write(s.toString());
            }
            System.out.println();
            writer.write(lineSeparator);
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

    public void write(Object... text) {
        try {
            for (Object s : text) {
                System.out.print(s);
                writer.write(s.toString());
            }
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

    public void close() {
        System.out.println("================ closed");
        try {
            writer.close();
        } catch (IOException e) {
            throw new TechnicalException(e);
        }
    }

}
