import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;


public class GoogleC {
	public String szamol(String input){
		String result="";
		String a=input;
		Integer min=Integer.parseInt(a.substring(0,a.indexOf(' ')));
		a=a.substring(a.indexOf(' ')+1);
		Integer max=Integer.parseInt(a);
		Long count=0l;
		for(Integer i=min; i<=max; i++){
			String e1=i.toString();
			Set<Integer> db=new HashSet<Integer>(); 
			for (int j=1; j<e1.length();j++){
				
				String e2=e1.substring(j)+e1.substring(0,j);
				Integer k=Integer.parseInt(e2);
				if (k>i && k<=max){
					db.add(k);
					//System.out.println(e1+"\t"+e2);
				}
				
			}
			count+=db.size();
		}
		
		return count.toString();
	}
	public static void main(String[] args) {
		GoogleC a=new GoogleC();
		//String filename="input.txt";
		//String filename="C-small-attempt0.in";
		String filename="C-large.in";
		String thisLine;
		try {
			BufferedReader br = new BufferedReader(new FileReader(filename));
			BufferedWriter bw= new BufferedWriter(new FileWriter(filename+".out"));
			thisLine=br.readLine();
			Integer tnum=Integer.parseInt(thisLine);
		     for(int i=0;i<tnum;i++) { // while loop begins here
		    	 	thisLine=br.readLine();
		           System.out.println(thisLine);
		           System.out.println("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		           bw.write("Case #"+(i+1)+": "+a.szamol(thisLine)+"\n");
		         } // end while 
		        // end try
		     br.close();
		     bw.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}


	}

}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;

/**
 * template class for code jam Contest
 * 
 * @author Tudor
 * 
 */

public class Main
{
    public static final String INPUT_FILE = "src/in.txt";
    public static final String OUTPUT_FILE = "out.txt";
    java.io.BufferedWriter br;

    /*
     * the number of tests
     */
    int tests;
    /*
     * the size of the test
     */
    int a, b;
    /*
     * the array
     */
    int[] tree;

    public static void main(String args[])
    {
	Main classMain = new Main();
	try
	{
	    Scanner scanner = new Scanner(new File(Main.INPUT_FILE));
	    classMain.br = new java.io.BufferedWriter(new FileWriter(Main.OUTPUT_FILE));
	    classMain.setData(scanner);

	} catch (FileNotFoundException e)
	{
	    e.printStackTrace();
	} catch (IOException e)
	{
	    // TODO Auto-generated catch block
	    e.printStackTrace();
	}
    }

    /**
     * method to set the initial data and run the tests
     * 
     * @param br
     *            the reader obtained from file
     */

    public void setData(Scanner scanner)
    {
	try
	{
	    tests = scanner.nextInt();
	    // System.out.println("Tests " + tests);
	    for (int i = 0; i < tests; i++)
	    {
		a = scanner.nextInt();
		b = scanner.nextInt();
		solve(i + 1);
	    }
	    br.close();

	} catch (Exception e)
	{
	    e.printStackTrace();
	}
    }

    /**
     * method to solve the problem
     * 
     * @param testNr
     *            the index of the test
     */

    public void solve(int testNr)
    {
	int result = 0;
	int digits = getDigits(a);

	MyDictionary recycledNumbers = new MyDictionary();

	for (int i = a; i <= b; i++)
	{
	    int number = i;
	    for (int d = 0; d < digits; d++)
	    {
		number = number / 10 + (number % 10) * ((int) Math.pow(10, digits - 1));
		if ((number != i) && (a <= number && number <= b))
		{
		    recycledNumbers.put(Math.min(i, number), Math.max(i, number));
		    // System.out.println(i + "    " + number);
		}
	    }
	}
	System.out.println(recycledNumbers);

	result = recycledNumbers.size();

	try
	{

	    br.write("Case #" + testNr + ": " + result + "\n");
	} catch (IOException e)
	{
	    e.printStackTrace();
	}

    }

    int getDigits(int x)
    {
	int digits = 0;
	while (x != 0)
	{
	    x = x / 10;
	    digits++;
	}

	return digits;
    }
}

class MyDictionary
{
    private Map map;

    MyDictionary()
    {
	this.map = new HashMap();
    }

    public List get(int key)
    {
	return (List) this.map.get(key);
    }

    public void put(int key, int value)
    {
	List list = get(key);
	if (list == null)
	{
	    list = new ArrayList();
	    this.map.put(key, list);
	}
	if (!list.contains(value))
	    list.add(value);
    }

    public int size()
    {
	int totalSize = 0;
	for (Object valueList : map.values())
	{
	    totalSize += ((List) valueList).size();
	}

	return totalSize;
    }
}
