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 com.google.codejam;

import java.io.DataOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Scanner;
import java.util.regex.Pattern;

public class CodeJam3 {
	private static int testCase;
	private static FileOutputStream fostream;
	private static DataOutputStream out;

	public static void main(String[] args) {

		try {
			fostream = new FileOutputStream("output3.out");
			out = new DataOutputStream(fostream);
			Scanner scanner = new Scanner(new File("C-small-attempt2.in"));
			String inputNumberline = scanner.nextLine();
			testCase = Integer.parseInt(inputNumberline);
			for (int i = 0; i < testCase; i++) {
				filterString(scanner.nextLine(), i);
			}
			out.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}

	}

	private static void filterString(String fstring, int caseNumber) {

		final Pattern SPACE = Pattern.compile(" ");
		int A = 0, B = 0;
		int i = 0;
		for (String token : SPACE.split(fstring)) {
			try {
				if (i == 0) {
					A = Integer.parseInt(token);
					i++;
				} else {
					B = Integer.parseInt(token);
					i++;
				}
			} catch (NumberFormatException ex) {
				System.err.println(token + " is not a number");
			}
		}

		int c1, c3, x1, x2, x3, x4;

		int count = 0;
		int length = String.valueOf(A).length();
		if (!(length < 2))
			for (int j = A; j < B; j++) {
				switch (length) {
				case 2:
					c1 = j % 10;
					c3 = j / 10;
					c1 = (c1 * 10) + c3;
					if (c1 > A && c1 <= B) {
						count++;
					}
					A++;
					break;
				case 3:
					x1 = j % 10;
					x2 = j % 100;
					x3 = j / 10;
					x4 = j / 100;
					x1 = (x1 * 100) + x3;
					x2 = (x2 * 10) + x4;
					if (x1 > A && x1 <= B) {
						count++;
					}
					if (x2 > A && x2 <= B) {
						count++;
					}
					A++;
					break;
				}
			}

		System.out.println("Case #" + (caseNumber + 1) + ": " + count);
		try {
			out.writeBytes("Case #" + (caseNumber + 1) + ": " + count + "\n");
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}
