import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.HashSet;


public class A {
	
public static int a(String str){
	
	int retVal = 0;
	
	String arr[] = str.split(" ");
	int n = Integer.parseInt(arr[0]);
	int m = Integer.parseInt(arr[1]);
	
	for(int i = n ; i < m; i++){
		String cur = Integer.toString(i);
		cur += cur;
		HashSet<String> set = new HashSet<String>();
		for(int j = 1; j < cur.length()/2 ; j++){			
			String val = cur.substring(j, j+cur.length()/2);
			int intVal = Integer.parseInt(val);			
			if(set.add(val) && intVal > i && intVal <= m){				
				retVal++;
				//System.out.println(retVal + ":" +cur.substring(cur.length()/2)+" : "+intVal);
			}
		}
		
	}
	
	
	return retVal;
	
}	
	
public static void main(String args[]){
		
		File file = new File("C-small-attempt0.in");
		
		int T = 0;
		try{
			  FileInputStream fstream = new FileInputStream(file);
			
			  DataInputStream in = new DataInputStream(fstream);
			  BufferedReader br = new BufferedReader(new InputStreamReader(in));
			  String strLine;
			  if ((strLine = br.readLine()) != null)   {
				  T = Integer.parseInt(strLine);
			  }
			  int currentCase = 1;
			  while(T > 0 && currentCase <= T){
						
						String str= br.readLine();
						
						System.out.println("Case #"+currentCase+": " + a(str));
						currentCase++;
					}
			
			  in.close();
			    }catch (Exception e){
			  System.err.println("Error: " + e.getMessage());
			  }
		
		
		
	}
	
}
