/*
 * 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.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;
import java.util.TreeSet;

import static java.lang.Math.*;

public class RecycledNumbers {
	String PROBLEM_ID = "RecycledNumbers";

	enum TestType {
		EXAMPLE, SMALL, LARGE
	}

//	 TestType TYPE = TestType.EXAMPLE;
	 TestType TYPE = TestType.SMALL;
//	TestType TYPE = TestType.LARGE;

	public String getFileName() {
		String result = PROBLEM_ID + "_";
		switch (TYPE) {
		case EXAMPLE:
			result += "example";
			break;
		case SMALL:
			result += "small";
			break;
		case LARGE:
			result += "large";
			break;
		}
		return result;
	}

	public String getInFileName() {
		return getFileName() + ".in";
	}

	public String getOutFileName() {
		return getFileName() + ".out";
	}

	public static void main(String[] args) throws Exception {
		new RecycledNumbers();
	}

	public RecycledNumbers() throws Exception {
		BufferedReader in = new BufferedReader(new FileReader(getInFileName()));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter(
				getOutFileName())));
		Scanner scan = new Scanner(in);
		int tests = scan.nextInt();
		TreeSet<Integer> seen = new TreeSet<Integer>();
		for (int test = 0; test < tests; test++) {
			int result = 0;
			int A = scan.nextInt();
			int B = scan.nextInt();
			int s = (""+A).length();
			int Z = 1;
			for ( int i = 0; i < s; i++) Z *= 10;
			for ( int n = A; n < B; n++) {
				seen.clear();
				for ( int select = 10; select < Z; select *= 10) {
					int v = n / select;
					int w = n % select;
					int m = (Z/select) * w + v;
					if ( m > n && m <= B && !seen.contains(m) )  {
						seen.add(m);
//						System.out.printf("pair n = %d m = %d select = %d\n", n, m, select);
						result++;
					}
				}
			}
			String resultStr = String.format("Case #%d: %d", test + 1, result);
			// add answer here

			System.out.println(resultStr);
			out.println(resultStr);
		}
		out.close();
		System.out.println("*** in file =  " + getInFileName());
		System.out.println("*** out file = " + getOutFileName());
	}
}

