/*
 * 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.InputStreamReader;

class RN {
    private static BufferedReader br = null;
    private static int numCases;
    private static int lowerBound, upperBound;
    private static String[] input;

    public static void main(String[] args) throws Exception {
        try {
            br = new BufferedReader(new InputStreamReader(System.in));
            numCases = Integer.parseInt(br.readLine().trim());

            for(int i = 0; i < numCases; i++) {
                int numRecycled = 0;
                input = br.readLine().split(" ");
                lowerBound = Integer.parseInt(input[0]);
                upperBound = Integer.parseInt(input[1]);

                for(int j = lowerBound; j < upperBound; j++) {
                    String s = j + "";
                    for(int k = 0; k < s.length()-1; k++) {
                        String temp = s.substring(s.length()-1-k) + s.substring(0, s.length()-k-1);
                        //System.out.println("From " + s + " to " + temp + " with k = " + k);
                        int num = Integer.parseInt(temp);
                        if(num == j) continue;
                        //if(num >= lowerBound && num <= upperBound && !used[num]) {
                        if(num >= lowerBound && num <= upperBound && num > j) {
                            //System.out.println("From " + s + " to " + temp + " with k = " + k);
                            //System.out.println("\t" + j + "\t" + num);
                            numRecycled++;
                            //used[num] = true;
                            //used[j] = true;
                        }
                    }
                }

                System.out.println("Case #" + (i+1) + ": " + numRecycled);
            }
        }
        catch(Exception e) {
            e.getMessage();
            e.printStackTrace();
        }
    }
}
