import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.util.*;
import java.io.*;
import static java.lang.Math.*;

public class ProblemC {

	static int numLength(int x)
	{
		int ans = 0;
		while (x > 0)
		{
			ans ++;
			x /= 10;
		}
		return ans;
	}
	
	public static void main(String[] args) throws FileNotFoundException {
		Scanner fin = new Scanner(new File("C.txt"));
		PrintStream fout = new PrintStream("C.ans");
		int caseN = fin.nextInt();
		for (int caseI = 1; caseI <= caseN; caseI++)
		{
			int A = fin.nextInt();
			int B = fin.nextInt();
			int ans = 0;
			for (int n = max(A, 12); n < B; n++)
			{
				String front = Integer.valueOf(n / 10).toString();
				String back = Integer.valueOf(n % 10).toString();
				Set<Integer> appeared = new HashSet<Integer>();
				while (front.length() != 0)
				{
					if (back.charAt(0) != '0')
					{
						int m = Integer.valueOf(back + front);
						if (m > n && m <= B && !appeared.contains(m))
						{
							ans++;
							appeared.add(m);
							//fout.println(n + " " + m);
						}
					}
					back = front.charAt(front.length() - 1) + back;
					front = front.substring(0, front.length() - 1);
				}
			}
			fout.println("Case #" + caseI + ": " + ans);
		}
	}

}
