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.recycle;

import java.util.HashSet;
import java.util.Set;

public class Recycle {

	public String solve(String s) {

		String[] ss = s.split(" ");
		int a = Integer.parseInt(ss[0]);
		int b = Integer.parseInt(ss[1]);

		int n = ("" + a).length();
		int m = 0;

		for (int i = a; i <= b; i++) {
			int[] digits = collectDigits(i);
			Set<Integer> done = new HashSet<Integer>();
			for (int j = 1; j < n; j++) {
				int t = offsetNum(digits, j);
				if (t <= b && t > i && done.add(t)) {
					m++;
				}
			}
		}

		return "" + m;
	}

	private int[] collectDigits(int num) {
		int n = ("" + num).length();
		int[] digits = new int[n];
		int i = n;
		while (i > 0) {
			digits[--i] = num % 10;
			num = (int) (num / 10d);
		}
		return digits;
	}

	private int offsetNum(int[] x, int m) {

		int a = 0;

		for (int i = 0; i < x.length; i++) {
			a += x[(i + m) % x.length] * Math.pow(10, x.length - 1 - i);
		}

		return a;
	}
}
