import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.File;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.Arrays;
import java.util.ArrayList;

public class Numbers{   
  public static ArrayList<Triplet> scores;
  
  public static void main(String arg[]){
    System.out.print("Enter the file path of the input file : ");
    String path = new Scanner(System.in).nextLine();
    String ANS ="", output="";
    int a, b;
    
    try{
      Scanner read = new Scanner(new File(path));
      int testCases =  Integer.parseInt(read.nextLine());
      int cn=0; String tongue; 
      while(cn++<testCases){
          a = read.nextInt();
          b = read.nextInt();
          //read.nextLine();
        
        output = "Case #"+cn+": "+ solve(a,b);//WRITE ANS TO DIFFERENT FILE 
        ANS += output +" \n";
        System.out.println(ANS);
      }
      writeToFile("numbers.out",ANS);
    }
    catch(FileNotFoundException e){//if file is not found
      System.err.println("data file \'"+path+"\' was not found\nPress <enter> to exit...");
      (new Scanner(System.in)).nextLine();
      System.exit(1);
    }
  }
  
  public static void writeToFile(String file, String text){
    PrintStream out = null;
    try {
      out = new PrintStream(new FileOutputStream(file));
      out.print(text);
    }
    catch(Exception e){}
    finally {
      if (out != null) out.close();
    }   
  }
   
  public static int solve(int a, int b){
    int counter=0;
    for(int i=a; i<=b; i++){
      counter += recycle(""+i,b);      
    }
    System.out.println(counter);    
    return counter;
  }
  
  public static int recycle(String numb, int max){
    int numbOfLoops=numb.length()-1, count=0;
    int newNumb, success=0;
    String first="", second=""; int last=-10;
    
    while(count< numb.length()-1){
      second = numb.substring(numbOfLoops-count);
      first = numb.substring(0,numbOfLoops-count);
      newNumb = Integer.parseInt(second+first);      
      
      if(newNumb != last && newNumb > Integer.parseInt(numb) && newNumb <= max){
        last = newNumb;
        success++;
      }
      
      count++;
    }
    return success;
  }
}

