/*
 * 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.HashSet;
import java.util.Set;


public class TestCase {

	private int totalDigit = -1;
	private int max;
	private int min;
	public TestCase(String s) {
		String[] results = s.split(" ");
		totalDigit = results[0].length();
		min = Integer.parseInt(results[0]);
		max = Integer.parseInt(results[1]);
	}
	
	public int solve() {
		Set<Pair> total = new HashSet<Pair>();
		for (int i = min; i <= max; i++) {
			for (int j = 1; j < totalDigit; j++) {
				Pair p = getPair(i, j);
				if (p != null) {
					//System.out.printf("Adding pair(%d, %d), %b\n", p.getFirst(), p.getSecond(), total.add(p));
					total.add(p);
				}
			}
		}
		return total.size();
		
	}

	private Pair getPair(int number, int digit) {
		String source = String.valueOf(number);
		String target;
		Pair result = null;
		String first;
		String second;
//		if (digit == 1) {
//			first = source.substring(totalDigit - digit);
//			second = source.substring(0, digit);
////			target = source.substring(0, totalDigit) + source.substring(totalDigit - digit);
//		} else if (digit == 2) {
			first = source.substring(totalDigit - digit);
			second = source.substring(0, totalDigit - digit);
//		}
		target =  first + second;
		int targetNumber = Integer.parseInt(target);
		if (targetNumber >= min && targetNumber <= max & targetNumber != number) {
			result = new Pair(number, targetNumber);
		}
		return result;
	}
}
