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.nbarraille.gcj;
import java.io.IOException;


public class GCJ extends GCJHelper {
	protected static final String TEST_CASE = "C-small"; // CHANGE THIS WHEN CHANGING PROBLEM
	protected static final boolean RUN_ALL_CASES = true;
	protected static final boolean DEBUG = true;
	
	// DO WHATEVER TO SOLVE THE CASE
	// AND APPEND THE OUTPUT TO SB
	protected static void solveCase() throws IOException {
		long[] inp = readLongArray();
		int a = (int) inp[0];
		int b = (int) inp[1];
		int nbDigits = String.valueOf(a).length();
		int nbOk = 0;
		for (int i = a; i <= b; i++) {
			int i2 = i;
			for (int j = 1; j < nbDigits; j++) {
				i2 = shift(i2, nbDigits);
				if (i2 >= a && i2 <= b && i < i2) {
					nbOk++;
				}
			}
		}
		sb.append(nbOk);
	}
	
	
	private static int shift(int i, int nbDigits) {
		String s = String.valueOf(i);
		while (s.length() < nbDigits) {
			s = "0" + s;
		}
		return Integer.valueOf(s.charAt(s.length() - 1) + s.substring(0, s.length() - 1));
	}

	
	
	
	// DONT TOUCH THIS
	public static void main(String[] args) throws Exception {
		run();
	}
}
