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.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;


public class RecycledNumbers {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new RecycledNumbers().fun();
	}
	
	private void fun()
	{
		String file = "D:/CodeJam/input.in";
		int result = 0;
		try {
			scan = new Scanner(new File(file));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		
		int cases = scan.nextInt();
		
		for(int i = 1; i <= cases ; i++)
		{
			int lowLimit = scan.nextInt();
			int highLimit = scan.nextInt();
			result = findResult(lowLimit, highLimit);
			
			System.out.println("Case #"+i+": "+result);
		}
	}
	
	private int findResult(int lowLimit, int highLimit)
	{
		if(highLimit < 10)
			return 0;
		
		int[] lowArr = null;
		int count = 0;
		int shift = 0;
		ArrayList list = new ArrayList();
		for(int i = lowLimit; i <= highLimit; i++)
		{
			list.clear();
			lowArr = toArray(i);
			for(int j = 0; j < lowArr.length-1; j++)
			{
				int[] shiftArr = shift(lowArr);
				if(lowArr.length == shiftArr.length)
				{
					shift = arrayToInt(shiftArr);
					if(i < shift && shift >= lowLimit && shift <= highLimit)
					{
						if(!list.contains(shift))
						{
							list.add(shift);
							count++;
						}
					}
				}
			}
		}
		return count;
	}
	
	private int[] shift(int[] array)
	{
		int i = 0;
		
		int temp = array[array.length-1];
		for(i = array.length-1 ; i > 0; i--)
		{
			array[i] = array[i-1];
		}
		array[0] = temp;
		return array;
	}
	
	private int arrayToInt(int[] array)
	{
		int result = 0;
		for(int i =0; i < array.length ; i++)
		{
			result = array[i] + result * 10;
		}
		return result;
	}
	
	private int[] toArray(int value)
	{
		int array[] = new int[100];
		
		int count = 0;
		while(value > 0)
		{
			int temp = value % 10;
			value = value / 10;
			
			array[count++] = temp;
		}
		int array2[] = new int[count];
		int j = count - 1;
		
		for(int i = 0; i < count ; i++ , j--)
		{
			array2[j] = array[i];
		}
		
		return array2;
	}
	Scanner scan = null;
}
