/*
 * 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.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;


public class ProblemC {
	public static void main(String [] args){
		doIt();
	}

	public static void doIt(){

		try{
			BufferedWriter out = new BufferedWriter(new FileWriter("C-small-attempt0.out"));
			FileInputStream fstream = new FileInputStream(new File("C-small-attempt0.in"));
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			int testLines = Integer.parseInt(br.readLine());
			int caseCounter = 0;
			while ((strLine = br.readLine()) != null) {
				int possibs = 0;
				String[] str = strLine.split(" ");
				List<Integer> numbers = new ArrayList<Integer>();
				int  small = Integer.parseInt(str[0]);
				int  large = Integer.parseInt(str[1]);
				System.out.println(small + " " + large);
				for (int i = small ; i <= large ; i++){
					numbers.add(i);
				}
				for(int n : numbers){
					int len = String.valueOf(n).length();
					if (len == 1) continue;
					if (len == 2 && (String.valueOf(n)).substring(1, 2) != "0") {
						String strN = (String.valueOf(n)).substring(1, 2) + (String.valueOf(n)).substring(0, 1);
						System.out.println(strN);
						if (n < Integer.parseInt(strN) && Integer.parseInt(strN) <= large){
							possibs++;
						}
					}
					else if (len == 3) {
						String strN = (String.valueOf(n)).substring(2, 3) + (String.valueOf(n)).substring(0, 2);
						if (n < Integer.parseInt(strN) && Integer.parseInt(strN) <= large && (String.valueOf(n)).substring(2, 3) != "0"){
							possibs++;
						}
						String strNN = (String.valueOf(n)).substring(1, 3) + (String.valueOf(n)).substring(0, 1);
						if (n < Integer.parseInt(strNN) && Integer.parseInt(strNN) <= large && (String.valueOf(n)).substring(1, 2) != "0"){
							possibs++;
						}
					}
					else if (len == 4) {
						String strN = (String.valueOf(n)).substring(3, 4) + (String.valueOf(n)).substring(0, 3);
						if (n < Integer.parseInt(strN) && Integer.parseInt(strN) <= large && (String.valueOf(n)).substring(3, 4) != "0"){
							possibs++;
						}
						String strNN = (String.valueOf(n)).substring(2, 4) + (String.valueOf(n)).substring(0, 2);
						if (n < Integer.parseInt(strNN) && Integer.parseInt(strNN) <= large && (String.valueOf(n)).substring(2, 3) != "0"){
							possibs++;
						}
						String strNNN = (String.valueOf(n)).substring(1, 4) + (String.valueOf(n)).substring(0, 1);
						if (n < Integer.parseInt(strNNN) && Integer.parseInt(strNNN) <= large && (String.valueOf(n)).substring(1, 2) != "0"){
							possibs++;
						}
					}
				}
				System.out.println(possibs);
				caseCounter++;
				out.write("Case #" + caseCounter + ": " + possibs);
				out.newLine();
			}
			in.close();
			out.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
}
