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 cj2012;

import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class c {

	static PrintWriter pw;
	static int testOut = 1;

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(new FileReader(
				"C://CODEJAM//2012//C-small-0.in"));
		pw = new PrintWriter(new FileWriter("C://CODEJAM//2012//C-small-0.out"));

		int ntest = sc.nextInt();
		// sc.nextLine();

		for (int test = 1; test <= ntest; ++test) {
			// sc.next();
			int A = sc.nextInt();
			int B = sc.nextInt();

			int pairs = 0;

			for (int i = A; i <= B; i++) {
				// System.out.println(i);
				if (i > 9) {
					String is = "" + i;
					HashSet<String> results = new HashSet<String>();
					for (int j = 1; j < is.length(); j++) {
						String changed = is.substring(is.length() - j,
								is.length())
								+ is.substring(0, is.length() - j);
						if (!results.contains(changed)) {
							int ci = Integer.parseInt(changed);
							if (ci > i && ci <= B) {
								//System.out.println(is + "-" + changed);
								pairs++;
								results.add(changed);
							}
						}

					}
				}
			}

			wc("" + pairs);
		}

		pw.close();
		sc.close();
		System.out.println("finished");
	}

	// static int Digits(int number) {
	// int digits = 0;
	// int step = 1;
	// while (step <= number) {
	// digits++;
	// step *= 10;
	// }
	// if (digits == 0)
	// return 1;
	// else
	// return digits;
	// }

	private static void wc(String text) {
		String tt = "Case #" + testOut++ + ": " + text;
		pw.print(tt);
		pw.println();
		System.out.println(tt);
	}
}
