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();
	}

}
/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package speaking;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.LinkedList;

/**
 *
 * @author Marisol
 */
public class clsArchivo{
   
    private LinkedList<String> lista=new   LinkedList<String>();
    
    public  void clsArchivo(String src) {
        try {
            File file=new File(src);
            FileReader filereader = new FileReader(file);  
            BufferedReader buffer = new BufferedReader(filereader);
            String linea=buffer.readLine();
            
            lista.add(linea);
            while ((linea=buffer.readLine())!=null) {
                lista.add(linea);
            }   
        } catch (Exception e) {
            System.out.println("archivo incorrecto"); 
        }
    }
    
    public  LinkedList<Integer> progra (){
        String total = lista.get(0);//el primer elemento
        
        //Creamos un arreglo con los datos leidos
        LinkedList array = new LinkedList<Integer>();
        
        for (int i = 1; i < Integer.parseInt(total)+1; i++) {
            String linea=lista.get(i);//lectura de lineas
            String num[] = linea.split("\\s+");
            int res=0;
            int numero1 = Integer.parseInt(num[0]);
            int numero2 = Integer.parseInt(num[1]);
            
            for (int j = numero1; j < numero2; j++) {
                for (int k = j+1; k < numero2+1; k++) {
                    String uno = ""+j;
                    String dos = ""+k;
                    String pal1="";
                    if(uno.length() == dos.length()){
                        for (int l = 0; l < uno.length(); l++) {
                            String pal2= ""+uno.charAt(l);
                            if(dos.contains(pal1+pal2)==true){
                                pal1+=pal2;
                            }
                            else{
                                l=uno.length();
                            }
                        }
                        String pal4="";
                        for (int l = pal1.length(); l < dos.length(); l++) {
                            String pal3= ""+uno.charAt(l);
                            if(dos.contains(pal4+pal3)==true){
                                pal4+=pal3;
                            }
                            else{
                                l=dos.length();
                            }
                        }
                        String res1 =pal4+pal1;
                        
                        if(dos.equals(res1)==true){
                            //System.out.println(" "+ res1+ "  " +dos);
                            res++;
                        }
                    }
                }
            }
                        
            System.out.println("Case #"+ (i) +": "+res);
            array.add(res);
        }
        return array;
    }
    
}