/*
 * 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.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.HashSet;


public class RecycledNumbers {

    /**
     * Google Code Jam 2012: Problem C. Recycled Numbers
     * @author hullarb
     * @param args
     * @throws IOException 
     * @throws NumberFormatException 
     */
    public static void main(String[] args) throws NumberFormatException, IOException {
	BufferedReader input = new BufferedReader(new FileReader(args[0]));
	OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(args[0].contains("in")?args[0].replace("in", "out"):args[0] + ".out"));
	int testCases = Integer.parseInt(input.readLine());
	for(int i = 0; i < testCases; i++) {
	    String[] parts = input.readLine().split(" ");
	    int A = Integer.parseInt(parts[0]);
	    int B = Integer.parseInt(parts[1]);
	    int pairs = 0;
	    for(int j = A; j <B; j++) {
		pairs += possiblePairs(j,B);
	    }
	    out.write("Case #" + (i + 1) + ": " + pairs + "\n");
	}
	out.close();
	input.close();
    }

    private static int possiblePairs(int j, int b) {
	String digits = "" + j;
	int pairs = 0;
	HashSet<Integer> found = new HashSet<Integer>();
	for(int i = 0; i < digits.length() - 1; i++) {
	    int n = Integer.parseInt(digits.substring(digits.length() - 1 - i)
		    	+ digits.substring(0,digits.length() - 1 - i));
	    if(n > j && n <= b && !found.contains(n)) {
		found.add(n);
		pairs++;
	    }
	}
	return pairs;
    }

}
