import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;

public class C{
	Scanner sc=new Scanner(System.in);

	int INF=1<<28;
	double EPS=1e-9;

	int caze, T;
	int A, B;

	void run(){
		T=sc.nextInt();
		for(caze=1; caze<=T; caze++){
			A=sc.nextInt();
			B=sc.nextInt();
			solve();
		}
	}

	void solve(){
		int ans=0;
		for(int n=A; n<=B; n++){
			int digit=(int)(log10(n)+EPS);
			int d=(int)pow(10, digit);
			// debug("n", n);
			for(int m=rot(n, d); m!=n; m=rot(m, d)){
				// debug("m", m);
				if(n<m&&m<=B){
					ans++;
				}
			}
		}
		answer(ans+"");
	}

	int rot(int n, int d){
		return n/10+n%10*d;
	}

	void answer(String s){
		println("Case #"+caze+": "+s);
	}

	void println(String s){
		System.out.println(s);
	}

	void print(String s){
		System.out.print(s);
	}

	void debug(Object... os){
		System.err.println(deepToString(os));
	}

	public static void main(String[] args){
		try{
			System.setIn(new FileInputStream("dat/C-small.in"));
			System.setOut(new PrintStream(new FileOutputStream("dat/C-small.out")));
		}catch(Exception e){}
		new C().run();
		System.out.flush();
		System.out.close();
	}
}

package codejam.y2012.r0;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 * @author Ilya Lantuh
 */
public class Task3 {

    static Scanner input;
    static BufferedWriter output;

    public static void main(String[] args) throws Exception {
        input = new Scanner(new File("D:/Programming/Projects/CodeJam/input.txt"));
        output = new BufferedWriter(new FileWriter("D:/Programming/Projects/CodeJam/output.txt"));
        int T = input.nextInt();
        for (int i = 1; i <= T; i++) {
            String result = getResult();
            System.out.println("Case #" + i + ": " + result);
            output.write("Case #" + i + ": " + result);
            output.newLine();
        }
        output.close();
    }

    public static String getResult() {
        int A = input.nextInt();
        int B = input.nextInt();
        Set<String> res = new HashSet<String>();
        for (int i = A; i < B; i++) {
            String num = String.valueOf(i);
            for (int j = 1; j < num.length(); j++) {
                int num2 = Integer.parseInt(getRecycled(num, j));
                if (num2 > i && num2 <= B) {
                    res.add("(" + num + ", " + num2 + ")");
                }
                
            }
        }
        return String.valueOf(res.size());
    }
    
    public static String getRecycled(String source, int digits) {
        String firstPart = source.substring(0, source.length() - digits);
        String secondPart = source.substring(source.length() - digits);
        return secondPart + firstPart;
    }
    
}
