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

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Map;
import java.util.HashMap;
import java.util.Iterator;
  
public class Hw3 {

	public static int calNum(int n1, int n2){
	int num = 0;
	int i =0;
	for( i=n1; i<=n2; i++){
		String t = Integer.toString(i);
		int len = t.length();
		String shitString = t;
		//System.out.println("Origin "+ t);

		for(int tt=1; tt<len; tt++){
			String tmpString = shitString.substring(1, len);
			tmpString =tmpString+ shitString.substring(0,1);
			//System.out.println(" shit "+ tmpString);
			shitString = tmpString;
			int tmpNum = Integer.parseInt(shitString);
			if(tmpNum>i && tmpNum>=n1 && tmpNum<=n2)
				num++;
		}
		
	}
	
	return num;
}


	public static void main(String[] args) throws IOException {
		 //String line, ArrayList<Integer> sTree, 

		 
	      FileReader reader = new FileReader("/Users/leyu/Desktop/C.in");   
	      
	      BufferedReader br = new BufferedReader(reader);   
	      String s1 = "";   
	      int count = 0;
	      
//	      
//	      Map<String, Integer> triMap = new HashMap<String, Integer>();
//	      Map<String, Integer> mp0 = new HashMap<String, Integer>();
//	      Map<String, Integer> mpLine = new HashMap<String, Integer>();
//	      
	      int num = 0;
	      s1 = br.readLine();
	      count = Integer.parseInt(s1);
	      for( int i = 0; i<count ; i++){
	    	  s1 = br.readLine();
	    	  String []words = s1.split(" ");	
	    	  int n1 = Integer.parseInt(words[0]);
	    	  int n2 = Integer.parseInt(words[1]);
	    	  num = calNum(n1, n2);
	    	  System.out.println("Case #"+(i+1)+": "+num);
	      }


	       
	     br.close();   
	     reader.close();   
			
		}


}
