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.HashSet;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;


public class RN
{
	public static Set<Pair<Integer, Integer>> RNPair = new HashSet<Pair<Integer, Integer>>();
	public static class Pair<L,R> {

		  private final L left;
		  private final R right;

		  public Pair(L left, R right) {
		    this.left = left;
		    this.right = right;
		  }

		  public L getLeft() { return left; }
		  public R getRight() { return right; }

		  @Override
		  public int hashCode() { return left.hashCode() ^ right.hashCode(); }

		  @Override
		  public boolean equals(Object o) {
		    if (o == null) return false;
		    if (!(o instanceof Pair)) return false;
		    Pair pairo = (Pair) o;
		    return this.left.equals(pairo.getLeft()) &&
		           this.right.equals(pairo.getRight());
		  }

		}
	public static void main(String[] args)
	{

		Scanner scnr = new Scanner(System.in);
		int T = scnr.nextInt();
		for (int t = 1; t <= T; t++)
		{
			RNPair.removeAll(RNPair);
			Integer first = scnr.nextInt();
			Integer last = scnr.nextInt();

			int ans = 0;
			for (int i = first; i < last; i++)
			{
				ans += check(first, last, i);
			}
			//ans /= 2;

			System.out.println("Case #" + t + ": " +RNPair.size());

		}

	}

	public static int check(Integer start, Integer end, Integer num)
	{
		String numStr = num.toString();
		int l = numStr.length();
		int count = 0;
		for (int i = 0; i < l - 1; i++)
		{
			String rotStr = numStr.substring(l - i - 1) + numStr.substring(0, l - i - 1);

			int rotStrNum = Integer.parseInt(rotStr);
			if (rotStrNum < start || rotStrNum > end)
				continue;
			
			if (rotStrNum <= num)
				continue;

			if (num.toString().length() != Integer.toString(rotStrNum).length())
				continue;
			

			if ((start <= num) && (num < rotStrNum) && (rotStrNum <= end))
			{
				count++;
				Pair<Integer, Integer> p = new Pair<Integer, Integer>(num, rotStrNum);
				RNPair.add(p);
				//System.out.println(num + " " + rotStrNum);
			}

		}
		return count;

	}

}
