/*
 * 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.util.*;
public class b {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Scanner sc = new Scanner(System.in);
		String ss = sc.nextLine();
		int casenum = Integer.parseInt(ss);
		String answer = "";
		for(int i = 1;i<=casenum;i++){
			answer = answer.concat("Case #".concat(Integer.toString(i)).concat(": "));
			ss = sc.nextLine();
			String wer = recycledpair(ss);
			answer = answer.concat(wer);
			answer = answer.concat("\n");
		}
		System.out.print(answer);
	}
	
	public static String recycledpair(String a){
		int n = Integer.parseInt(a.substring(0, a.indexOf(' ')));
		int m = Integer.parseInt(a.substring(a.indexOf(' ')+1, a.length()));
		int nlength = a.substring(0, a.indexOf(' ')).length();
		int pairnum = 0;
		String rcp ="";
		for(int i=n; i<m; i++){
			LinkedList<Integer> mylist = new LinkedList<Integer>();
			String sn = Integer.toString(i);
				//a.substring(0, a.indexOf(' '));
			for(int j=1; j<sn.length(); j++){
				String newnum = sn.substring(j,sn.length()).concat(sn.substring(0,j));
				int newint = Integer.parseInt(newnum);
				if(newint>i&&newint<=m){
					if(!mylist.contains(newint)){
					pairnum++;
					mylist.add(newint);
					}
					else{
						mylist.add(newint);
					}
				}
			}
		}
		String snumreturn = Integer.toString(pairnum);
		//System.out.print(snumreturn);
		return snumreturn;
	}
}
