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 recyclednumbers;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;


public class SimpleWriter {
	private BufferedWriter bw;
	private int line;
	
	public SimpleWriter() {
		String filename = prompt();
		setWriter(filename);
	}
	
	public SimpleWriter(String filename) {
		setWriter(filename);
	}
	
	private String prompt() {
		System.out.println("Output file: ");
		BufferedReader bufr = new BufferedReader(
				new InputStreamReader(System.in));
		String filename = null;
		try {
			filename = bufr.readLine();
		} catch (IOException e) {
			System.err.println("At prompt: " + e.getMessage());
		}
		return filename;
	}
	
	private void setWriter(String filename) {
		try {
			bw = new BufferedWriter(new FileWriter(filename));
		} catch (IOException e) {
			System.err.println(e.getMessage());
		}
	}
	
	public void writeLine(String str) {
		try {
			line++;
			bw.write(str + "\n");
		} catch (IOException e) {
			System.err.println("Line " + (line - 1) + ": " + e.getMessage());
		}
	}
	
	public void writeLine(int i) {
		writeLine(i + "");
	}
	
	public void writeLine(int[] arr) {
		String line = "";
		for (int i : arr) {
			line = line + i + " ";
		}
		line = line.trim();
		writeLine(line);
	}
	
	public void flush() {
		try {
			bw.flush();
		} catch (IOException e) {
			System.err.println("At flush: " + e.getMessage());
		}
	}
}
